What I'd really like to see is a "brick bucket" that contains mostly large bricks and maybe a few doors, windows, and slanted tiles. I'm all for gribbly bits, but it seems harder to accumulate a good collection of the basics these days - because the big "brick buckets" you describe are probably half gribbly bits. In my experience as a kid, what we really wanted was enough mass to build walls and houses and forts, and were not as interested in small detail stuff.