The thing is (and I see Fast Fanatic rolling with the same idea) we run TAMADRApurin in our teams not just because he's a huge stat stick but also because he's a mini-slime with his 2x atk for light active. So basically he works for Light in a similar way to how Bubblie would work for physicals. The problem here is that Bubblie is nigh useless outside of its burst-- a waste of a slot basically. Sure, x75 is a lot more than x50, but you're also getting a lot more choices for variety on the team that way too.
My current Kirin team is Kirin/TAMADRApurin/UltGOdin/B/L Sieg/Apollo-- everyone has light in some form-- and running it this way gets Odin the x50 as well, instead of being left behind when Bubblie is used. Using Gabriel instead of Siegfried is the same idea. And his RCV is to die for tbh (and his atk is better than B/L Sieg's is)-- AND he gets an autoheal on top of that. All for the cost of ~1500 HP, which is Sieg's advantage. But with my team, I'll be getting 2500 autoheal plus awesome RCV on top of that.
...in fact, why am I not running LMeta on this team?
Holy shit, why have I forgotten LMeta-- that would make THREE bindproof team members, as well as one that can get rid of binds in case Kirin or Apollo get hit.
I need to look into this. Her HP is just a bit lower than Ult Gabe's, but her ATK is just maaaarginally better and her RCV is better. I never really use Sieg's active and I don't see myself using Gabe's much either (though heartmaking is welcome), but LMeta has an active, bind-clearing heal-- and she gets Bind Recovery too, which is great because I already just match hearts when I'm stalling anyway...