Well dude, the only thing I can say for sure, is that moving companies after two years for a better paid job with more responsibility in a better bank (bulge bracket) is NOT going to look bad. On the contrary. From an MBA perspective it'll probably look very very good.
As for the thing with your current employer, I can't really help you there, that's between you and your firm, and the people there, and you need to think that through.
But let's just say that from an admissions point of view it would be an excellent move.
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