Been a fan of Transmission on macOS for many years. I just wish I could install Transmission on a Linux box and still keep using the fantastic Cocoa interface it has on macOS.
You mean https://github.com/transmission-remote-gui/transgui or another gui? You should be able to connect remotely, that is pretty much the entire idea behind transmission. A torrent daemon with various UIs that use the API.
No idea what that is and any searches for those terms yield transgui. In any case the only way the transmission daemon can be controlled is through an API, which by definition works remotely.