Have to partially agree - OS3.9 support would be excellent, and maybe even "base"-version for all compatible systems - basic OS3.9 version for classics/amithlon/uae and mos/os4-version with more up-to-date GUI (better MUI-support). I don't have OS4 and the future for me getting one ain't that realistic either, OS3.9 however is here to stay with large number of classics and emulators, and in the worst case os3.9 version could be run under os4 too.