The reason we are saying there are less choices for NEW genesis cases are because UGC's do not fit in with your regular genesis collection. And as a collector, i hate making one cart naked for the sake of another. Sports games need some loving too.

(and in my opinion, the NHL games on the megadrive are some of the best games released on it, period.)
Also, although you dont have to modify a UGC for megadrive games, they are horribly loose in there - i dont consider it a good option for my MD/SMS games at all.
Plus, being in Europe it's difficult to get hold of UGC's - Whilst it was pricey to get the shadowfox GB cases shipped - it wasn't AS pricey as getting UGC's.
So for me, there aren't actually any viable options for getting hold of the 200+ sega cases i need, other than someone making them and selling them.