RG serves multiple purposes. With their self-heals from Echo, clones get into the green again, re-proccing RG's taunt when they r hit again. He's also my only stun and his slow just allows 5's to start double-tapping sooner or I can have 2 of their team slowed. RG keeps the clone machine up long enough to start their tm manipulation. I wouldn't toss a hitter in, I've tried Leia, Rey, Phasma for more tm, crit and slow, Aayla even, bcuz she can stun on crit. RG out-performs them all.
Sad as it sounds, think my next omega goes to RG's basic for +15% damage lol.
Playing non-meta in high-end meta does get me attacked more often, just to break up the monotony I assume. I try to go for the 1st spot from 3rd or 4th and get a message my team is under attack. Funny thing tho, about 1/3 of the time, my team holds its spot. I couldn't b more pleased playing something different that works as well as this team does.