should I start on 3 stars

Thevipper

https://mpq.gamependium.com/rosters/someone/

after championing moonstone should I start to focus the iso on my 3 stars to level 90-94 that can or should I focus on finishing my other 3 2 stars

I have 3 moonstone covers in que thats why I choose to champion

fnedude

I'd recommend staying with the 2*'s until your 3*'s have about 10 covers. Your Punisher+Patch+KK seem like the only canidates to me to get to lvl 94. Keep those at 94 max, don't take them to 100ish yet.

The other 3*'s don't have enough covers to use effectly, except when they are boosted. Then you can just lvl them for that event if you want them stronger.

Thevipper

Alright thanks