With me I will probably end up putting time and money into upgrading my collection, those odd little niggles here and there that don't particularly bother me all that much but I know I will want to fix when there's nothing else to buy. For example; that one loose figure with a slightly loose/wobbly arm, the other figure's blaster that has a 1mm piece broken off it, that one figure with a couple of tiny spots of paint rub on the chest, the MOC figure who's bubble is dented in, the other MOC with a crease in it, etc etc. All those little niggles will be upgraded to a more higher grade.
So yeah this is what i'll do for 'the man who has everything'.. replace, upgrade, perfect!
And then after that?.. i'm fucked really aren't it? lmao
I'm guessing this is the point maybe where some might turn to restoring toys and buying/selling as a trader, keeps them active in the hobby where they have nothing else to buy for themselves.