Sure, in the US now codes make this and so many other things impossible.

But if it's just the problem of connecting various kinds of pre-built conduit in lego-like walls, yes it would be a hard problem but it seems solvable in itself. Especially, you don't to have just fixed pieces. rather you can have pieces whose routining "logic" is adjustable after that fact (switch the flow of pipes from an internal panel of the wall). And you could have an app for verifying a given arrangement could work, before you ordered your "lego" set.