Yeah, I guess romans 2.0 probably isn't gonna get a second set of uvos anytime soon so it wouldn't be a major loss. It's more of a long-term goal anyway, I'm currently working on my Green Attacker team.
Also guys, don't forget that challenge dungeons 3 are gonna be a thing in a few days, and don't forget that in about a month~two months snow globe dragons are getting their EXP when fed doubled.
So I'd recommend waiting.