I do think it’s viable but the reason we run ain/mr2 is because we can play them on the 4 don turn to ramp. Jean bart makes it to where you need 5 don to actually ramp so the best card would be Mr.2 or miss all Sunday(even tho she doesn’t have counter she draws a card)
It’s a 4 cost that has counter and can be played on T2 going first. Other cards can be played in that slot but getting a 6k body on turn 2 is really good.