I know, MI did that once, in fact they won last 5 and the last one in dramatic situation (hit a SIX to qualify). But, that makes their (any team for a 8/10 run) chance even worse - Leicester City won EPL as well, for once. 
IPL is more balanced now and teams are more experienced - gradually point difference between top and bottom team should reduce. We'll come to a situation where NRR becomes key in IPL.

IPL is more balanced now and teams are more experienced - gradually point difference between top and bottom team should reduce. We'll come to a situation where NRR becomes key in IPL.