Does anyone have a custom playmat design they can share?

Or link to an already existing playmat that functions well for the game?

I've seen some designs on Inkedplaymats, but the problem seems there's always limited space for the remote servers (like 3-4 max)

I have never seen any custom playmat that has very much room for remotes, at least not among the mats that put the game layout in the design.

still, you should also ask on Reddit and Boardgamegeek, as those forums see more traffic than the FFG boards.