I'm a Mac OSX user... I have a PS2 for BS3 and most today games, but i still re-play endelessy my older adventure games on Mac OSX with SCUMMVM...
Now, BS4, i assume will run on the next PS3, no problems... But any news about BS2.5 on Mac OSX? If you didn't thinked about Mac until now, IMHO talking with the SCUMMVM team offering compatibility would be a brilliant workaround for us Mac user/2D adventure lovers...