you should go to TGR, i have a medium sized quiver over there. I see people with 10-20 skis, and major overlap. When you get older, some men collect watches, some collect cars, some collect stamps. I collect skis, and also, i share the whole quiver with my bro, where only 2mm off on bsl, and most of the bindings can easily change 2mm.
I do have quite a bit of width-overlap tho, but each ski I own has different attributes to negate that overlap. IE: JJ/Obsethed/Bibby Special, each are very very different, there is no TRUE overlap there, only in the dimensions. the only real overlap i have is the vicik and the belafonte, but im trying to get rid of the belafonte.