How would you feel about GOG Linux support being 64 bit only? At the moment this decision would affect only the game installer (it would be a binary from now on, and it could be clicked safely without the risk of being opened in text editor).
Games would still be "whatever-we-get-from-developer". We always try to ask for a 64 bit binary, but it's not possible in all cases.
Do you see any potential problems with that? Give me some input :)
Having 64-bit only installer is fine with me, as long as it would be still possible to extract it without running if anything goes wrong (now it kind of works). If you will still use MojoSetup it should be good. But rather than worry about bitness, may be you can clean up MojoSetup a bit. A few things in it which are starting to bit rot:
1. It creates $HOME/.gnome every time. I don't think anything uses this directory these days, so it shouldn't be created.
2. May be it should be using GTK3 instead of GTK2 already. Things are moving to Wayland, and GTK2 shouldn't be used anymore.
3. May be use a somewhat better compression (preferably with ability for parallelized decompression to shorten installation time)? Windows installers for same games are quite noticeably smaller than Linux GOG packages.
Since Mojo is really open source, may be you can make a Gitlab / Github repo for your whole bundle (combination of Mojo and other things), then community can help contributing various fixes and improvements by submitting merge requests. Same applies to any other installer solution you might prefer. Just an idea.