I don't care if they marry, live together, or go the common-law route. If they do officially tie the knot, I'd rather they just go to a JP or something. I don't really want to see some hokie "
A Very Special TMNT: Casey & April's Wedding".
I like how they handled Casey and Gabrielle's nuptials in the comics though. If April and Casey are married, I'd prefer a similar presentation.
Unfortunately, these matters aren't up to me, but I can keep my fingers crossed