Ok although I haven't released a updated version yet, I think I've pretty well addressed all the bugs you guys have found.
Next on the agenda is expanding the script functionality.
I figured a widescreen key would be nice. For a lot of the games though, widescreen has to be turned off, depending upon the screen you are on. Daytona has that area mapped out in the example lua script. Is there a list of the ws settings for the other games somewhere? I mean generic widescreen works pretty good, until you get to a game menu and the icons are all screwed up.
I also tried it on the gun games just to see how they behave. Gunblade and Bel actually work ok in ws mode, which is to be expected considering they use analog guns. Rail chase works ok as well, but I noticed the sound drops out in the first level... not sure if it's related or not.
As for the lightgun games.... Widescreen does indeed work, but I think it would be very confusing to the player. Although the view expands, the area in which you can shoot your gun is still restricted to 4:3. So if you see a guy on the edge of the screen you can't shoot at him.
Thoughts on this would be appreciated. Once I get this next release out I'll leave this project for a while, so you better get your requests in while you can.