I think it world be really useful if they made it so you could attach multiple boards together so you can make a super cool computer
Yes definitely we would also need a piece to link the two boards.
Good idea anyway. But about a really cool computer you could use something like this as a base. Base
I reckon if you had some of the reloader funnels some transparent plastic tubes and Lego robotics kits (to sort colours) you could do it but that would be expensive.
Maybe this could be done by connecting blue lever of board A to blue dropper of board B, red lever of board B to red dropper of board A.