Guess its just for IPL. this step is not going to improve umpiring standards at all ( for high pressure game it might look okay) and after this another dude (not AI) for LBW.
Yes it is only for IPL and I was thinking the same LOL. Here are the scopes:
A dedicated umpire for LBW
A dedicated umpire for Checking no balls in over stepping
A dedicated umpire to check now balls in full toss balls
A dedicated umpire to check wide in short pitch bouncers
A dedicated umpire to check caught behind
A dedicated umpire to check boundary
There could be many more scopes LOL
Honestly speaking these days the umpires are financially motivated.