For some definitions of "fun" perhaps.
Don't worry, I know all the layout tricks, and I'm not yet desperate.
I will do all the layout changes necessary to create a working ZX81 clone first, then concentrate on connecting the expansion port, if wire-bridges are the solution I will use them.
I already considered supporting "fly wires" that can be used when someone is in desperate need to have one or more esoteric (never used) signals connected to the expansion port. But I consider this more or less a cop-out.
Currently I aim to at least have enough signals connected to at least support the printer.