I could easily be at 18. Seriously dude, have you really tried plotting out how you could place 50-100 items on a small plot? There is no way you could do it without the yard looking like a klepto's house with junk everywhere unless you either tiled the lawn, or stuck a bunch of bushes inside each other.

I have no issues with raising the limit a bit (perhaps make amenities not count?) but 50-100 is waaaaayyyy too much.