I have an idea for a block that can attach two techs together. Possibly a block that acts as a docking port and you have to have one on each tech or one that attaches to whatever you press it against. There is also the problem of what happens when other blocks from each tech come together as they connect. What I think could fix this is if there was a small amount of room necessary for the connection and the docking block could be 1.5 blocks long instead of the normal size. And if there are blocks in the way then the connection simply won't work.