2.) With how long MAME has been around and the amount of development that has gone into it, I'm really surprised that there aren't game-specific controller configurations for consoles.
With Arcade games > Input [this Machine] It's specific to that arcade game. If I change the controls in Street Fighter Alpha USA, that controller configuration doesn't apply to Street Fighter Alpha Euro or any other CPS2 game for that matter. I guess this confused me (not being able to set game-specific configurations for console titles.)
For me It's just very convenient to set game-specific controller configurations because my controller configurations vary from game-to-game.
3.) So by default on the AES version of Metal Slug you aren't able to toggle blood? Or It's just that in MAME you'll need the Universe BIOS to do so?
4.) Is there a laymen's explanation for what a "timing issue" is? Is this something that can impact the refresh of a game and therefore create tearing?