I'm astounded at some of the comments here seeing comparisons between Haider Ali and Umar Akmal, Ahmed Shehzad and Imran Nazir, labelling him a slogger etc.
How many matches has he played ? Didn't he play the U19 World Cup only this year ? I understand the mental scarring from the past as Pakistan's track record of developing young batsmen is awful, but to expect Haider to already be close to the finished article is ludicrous !
I don't think you can judge a batsman from T20s, it's not a format where you'll get a proper idea of someone's defensive technique, their game on bowler friendly pitches etc. Most batsmen when under pressure for quick runs are most comfortable hitting through the leg-side so Haider favouring that area doesn't overly worry me, given I saw some good offside strokeplay in what few clips of the PSL I've seen. He's not comparable to Khushdil Shah whose boundaries against pace are almost entirely on the leg-side.
What I like about Haider Ali is he backs himself. There's no need to curb his attacking instincts in white ball cricket, game awareness will hopefully come with experience and he should learn from his dismissal yesterday in the semi-final vs SP when Northern needed him to bat to the end. However that can be a problem in red ball cricket, the few innings I saw of Haider Ali in last season's QEA Trophy, he seemed a bit loose outside off-stump. He might get away with it on flat Pakistani pitches where batsmen can easily hit through the line - but not in places like England (where some were demanding his Test debut), New Zealand and South Africa. Haven't seen enough of his game against the short ball to comment.
What's needed is for the coach and selectors to draw up a plan for him. My firm belief is all youngsters should be properly groomed through the ranks - not blindly rushed into internationals like Naseem Shah was. He should play every game for Pakistan A in their tour of New Zealand, and all the QEA Trophy matches he's available for with Northern. If he performs then consider a Test debut vs South Africa at home, but at 5 or 6 where he can bat without pressure, with the long-term goal being a promotion to 3. As for white ball cricket, give him a consistent run in the top order.