Brick selection is a massive pain in the ass comparatively. Your choices are severely limited, they're strewn across the ground, and you can only carry 3 at once, assuming your other two inventory slots are a hammer and spray can. You're forced to build on the provided baseplates. Additionally, the bricks were models and therefore a lot more resource-intensive.
RTB had a much larger selection of bricks and colors, but they were all contained within specific inventory slots. e.g. slot 1 was all bricks and slot 2 was all plates. You didn't need to pick them up, but you'd have to scroll through all of them. There was the editor wand, and while it did have some cool uses like shrinking bricks to make graffiti, stretched bricks look ugly as forget. RTB was kind of like an odd multiplayer modeling program in that regard.
and good god the Q key default bind in RTB was a murderer
