The problem is this.
Younis (and Misbah) can provide useful coaching to senior players about the mental side of the game.
But you need a specialist coach like Palmer to work on the technical side of the game, because he understands the actual mechanics of batting for a range of techniques, which Younis cannot.
Pakistan is in a funny position currently.
Babar Azam and Mohammad Rizwan are the finished article as batsmen.
Shan Masood is mediocre but Palmer gets him batting competently.
But there are several younger players who are capable of further technical improvement if they get an appropriately technically skilled coach. I am thinking of:
Abdullah Shafique and Haider Ali, to let them better understand the technical side of their games.
Saud Shakeel to refine his technique.
Mohammad Nawaz, Shadab Khan and Rohail Nazir probably have the basic skills that could be honed to take them to the point at which they could each average 40 as Test batsman/all-rounders.
Even lower down the order, proper batting coaching could probably enable all five of Faheem Ashraf, Amad Butt, Hasan Ali, Zafar Gohar and Sajid Khan to average 25 with the bat in Tests.
Younis Khan is excellent for teaching young cricketers to understand the mental side of international cricket.
But someone like Gary Palmer could add 150 runs per innings to the Pakistan Test batting line-up.
Imagine what mind blow opportunities PCB & PCT is missing!!!! Just imagine the impact - say this guy Palmer was appointed 4 years back..... and then I apply the possibilities, where PAK's Test batting and subsequently result could have ended - let's start from latest to past, this is Sunday evening ...
1. Southampton: Actual result - Draw. ENG 583/8 Dec. PAK 273 + 187/4
GP impact: ENG 583/8 Dec. PAK 423 + and avoids follow-on - still draw
2. Southampton: Actual result - Draw. PAK 236, ENG 114/4
GP impact: PAK 350+ for 8 - still draw
3. Manchester: PAK 326 + 169, ENG 219+ 277/7: ENG winning by 3 wickets
GP impact: PAK 476 + 46/2, ENG 219 & Follow-on + ~300; PAK winning by 8 wickets
Series Result: ENG winning 1-0- GP impact: PAK winning 1-0
--------------------------------------------------------------------
4. R'Pindi: BD 233 + 168, PAK 445 - PAK win by innings & 44 runs
GP impact: PAK winning by innings & 194 runs
5. Karachi: PAK 191 + 555/3, SRL 271 + 212 - PAK win by 263 runs inside 4 days (5th morning)
GP impact: PAK winning by 413 runs (I think, tail won't have got the chance to add 150 second tim)
6. R'Pindi: SRL 308/6, PAK 252/2 - draw
GP impact: still draw for wet field
No change in either series result in any case
--------------------------------------------------
7. Adelaide: AUS win by innings and 48 runs with around 110 overs left in the game: AUS 589/3 Dec., PAK 302+ 239
GP Impact: AUS 589/3 Dec., + say 135/3Dec., PAK 452 + 89/6 - Match draw
Key here is, PAK avoiding follow-on means AUS would had to bat second time and I think, minimum they would have set is 270+, giving PAK 40 overs to bat in starting 35 minutes earlier than the start of "twilight zone"
8. Brisbane: AUS winning by innings & 5 runs: PAK 240 + 335, AUS 580 ... again match ending with around 115 overs left inside 4 days
GP Impact: PAK 390 + 485; AUS 580 & 105/6 - Draw. PAK batted at around 3.38 rate in that game, means extra 300 runs would have cost around 89 overs, leaving Aussies an impossible target of 295 to chase in like 29 overs.... I believe, they would have given a desperate try, hence 6 down before captains shaking hands
Series result: AUS winning 2-0 batting twice and losing 13 wickets in total - GP impact: series draw and AUS having a scare in first Tests, PAK in second .... honors even at the end
------------------------------------------------------------------------------------
9. J'burg: Actual - SAF winning by 107 runs inside 3.5 days with 155 overs left in the game: SAF 262 & 303, PAK 185 + 273
GP impact: SAF 262 + 303, PAK 345 + 221/8 - PAK winning by 2 wickets
10. Cape Town: Actual - SAF winning by 9 wickets inside 10 sessions. PAK 177 + 294, SAF 431 + 43/1
GP Impact: PAK 327 + 444, SAF 431 + 256 - PAK winning by 84 runs.
PAK batted around 3.9 rate in that game, so 300 runs would have cost around 75 overs, leaving SAF to chase 340 in 95 overs, with 15 overs with 2nd ball -I gave then 256 on Day 5 wicket.
11. Centurion: Actual: SAF winning by 6 wickets inside 3 days (8 sessions). PAK: 181 + 190, SAF 223 + 151/4
GP Impact: PAK 331 + 340, SAF 223 + 250 - PAK winning by 198 runs. Time wasn't a factor there and don't see SAF bettering 250 in 4th innings from 151/4
Series result: Actual SAF winning 3-0, in total costing CSAF 15 sessions of gate & tv money
GP Impact: PAK winning 3-0, carrying every game to 15th session.
--------------------------------------------------------------------------
12. Abu Dhabi: Actual: NZ winning by 123 runs: NZ 274 + 353/7d, PAK 348 + 156
GP Impact: NZ 272 + 153/4d, PAK 498. Game ended in last session with 23 overs left. At their scoring rate another 150 would have cost around 55 overs, means Kiwis would have got around 60 overs to survive - they were 152/4 after 55 overs in actual game ........ result: Draw
13. Dubai: Actual - PAK winning by innings & 16 runs: PAK 416/5d, NZ 90 + 312 with more than 100 overs left
GP impact: PAK winning by innings and 16 runs - they declared at 5 down, means no 150 .....
14: Abu Dhabi: Actual: NZ winning by 4 runs. NZ 153 + 249, PAK 227 + 171
GP Impact: NZ 153 + 249, PAK 427 + 26/0. PAK winning by 10 wickets
Series result: Actual - NZ winning 2-1. GP Impact - PAK winning 2-0
-----------------------------------------------------------------------------
If I go back further, with GP impact, still that AUS series would have been 1-0 to PAK, and IRL series as well; but the ENG tour of 2018 would have turned 2-0 in favor of PAK (Poms won't have chased 245 in 4th innings on that track) and further back SRL would have lost 2-0, instead of winning 2-0 ....
Have to say, incredible ........................