I wish Relius had another non-drive overhead. The only time I feel safe using 6a is with Ignis out. I'd also like 214d to come out a bit faster, so that it'd actually be viable in mixup. Also, I wish there was some way to combo/pressure with j.214b. Maybe bouncing on counterhit, making it untechable or something. To counterbalance it, make it slower, take up more meter, or something. Catching someone with that in air-air feels satisfying, but being able to follow up after it would feel awesome.
And this one is just because I suck, but I'd like 6d to actually be slower, so I could combo/pressure with it more easily.