I seem to be stuck on having a lot of characters on just 1 or 2 covers.
Any advice on who I should be concentrating on, how to level them quickly etc
I do play daily but only getting between 4K and 7K ISO
Roster - https://mpq.gamependium.com/rosters/rob72/
Thanks
first, except for 2*, leveling never happens quickly, so really temper your expectation there 
. your 3s look good - other than finishing fist and cyke and maybe at some pt taking gsbw up (maybe later when you get px going), and taking the bottom guys to 120, you don’t have much left to do. that leaves 4s. to do that most effectively you need to be targeting things that would get you consistently scoring 1K in pvp. that likely is hb. so any time hb is offered, I’d seriously consider spending some extra hp on shields to hop up to 1K. looking at your roster, I’m assuming you aren’t hitting 1K regularly. if you can’t commit the extra hp or manage to get to 1K (or I guess an alternative is consistent t10s in pve, but that’s much harder to me), it will be a long slow road and you might as well finish out your 3s. I know its possible (pvp 1K) but not particularly pleasant with 3s.