Help me build my arena squad?

Leia for sho

Depends on what your arena looks like and what level everyone is at.

They're all level 80 and about the same in gear (9-10)

Leia!!

ST Han. You got enough firepower with rey, you get more synergy with ST hans turn meter gain. ive been down this same path, leia is only good with ackbar.

Hard choice, i run a 2 tank team so im partial to tanks but dont care for STH.

If you're losing Rey a lot right off the bat because of lower gear then add Leai as you need another dps (a second tank will only help if your toons can take a few hits).

If your Rey gets killed because opposing teams dispell RG taunt and then kill Rey, then you need to add STH for a 2nd taunter to let Rey do her stuff longer.

Just keep in mond AE or droid squads will mow Leai down quick, she is more of a glass canon than Rey but if you omega her out she won't get targeted as much.

if anyone is using st han for shielding other teammates thats when its wrong, sthans greatest asset is his tm manipulation via his taunts

His TM is a plus but his taunt cannot be discounted. I usually keep STH stunned so he rarely gets to use his TM until most of the team is dead so it's useless a lot of the time.