Not at all realistic
But the fit is actually really nice in theory. G2 really liked Yoru and Derke is probably? the best Yoru in tier 1. Team focused enough that it wouldn't force the rest of the team to abandon its identity, but still give a massive firepower increase.
I think Icy's been a bit over criticized and honestly don't think it'd be a bad idea for them to run it back with him, but I mean, top 5 duelist in the world lol (Obviously not happening tho)
Discord