She's not gonna have a "fighting chance" vs lex and sinestro unless you give her a full screen two hit low/auto throw. Something like MC but low.
Or give MC MB armor.
Or give her an air dash (and have her end up broken)
I do think the B2 series and the 1 series have t-Rex arms. But I'm telling you right now. If these moves get range like her d2, you are gonna open pandoras box and make her wicked. Shell have a safe iadivekick that can't be punished, a lightning fast d1 to keep people from replying (and you can get a decent combo off it), WE3 is + on block so the B2 would damn near be free except against the more impossible of reversals/wake ups, and you can almost make it safe by canceling it into a WE3.
I'd rather they make her B3 faster. There's no reason to not make 123, b3 or mt mbu, b3 easier.
Make mt rotate vertically instead of horizontally, thus taking up more space.
Have 3 not knock down, and have it suck in for combos into WE2 and MT MB.
WE2 a little more range.