I TOTALLY AGREE. I mean, I can't even fathom 35 kits. Sell, sell, sell. Then pick up 2 high end kits or something like that. I mean, I love collections. I wish I had the money for such a collection. But, what's the point? To say exactly what you've asked here. . .what the heck do I do now?35 just seems crazy, I don't even know if I'd have space for that. I just downsized from 3 to 2 because of space vs lack of use.
That being said, to each their own. There are a lot of collectors out there as well. However, if you are asking if you should downsize, usually that means you should.
To the question about trading up, that depends on you and what you are looking for. I'd just look at what stuff you are doing, and what the best fit for those things would be.