Well, with an Amiga and another computer running UAE you can use Siamese RTG and have your way: share drives, use remote input devices, network, and RTG.
It just requires that you take some time adjusting the software for that purpose, but everything (hardware and software) already exists since a long time.
I used to have a Siamese RTG with an ebox (tiny 10x10cm PC) running WinUAE (under XP) connected to my DraCo that provided me what I mentioned, and also custom chip support (AGA) which the DraCo doesnt have, so I could play whdload games (via remote execution). I am still sorry I had to sell the ebox a year ago because I had financial difficulties, whenever I get a full financial recovery I might do it all again as I still have my DraCo waiting.