The more you ask MAME devs to do something the less likely they want to work on it. I suggest you give the MAME devs Thanks for what they are doing right now rather than post all the time ( I hope that Alpine Surfer and the Namco System 23 games should be fixed and have full protection ) the MAME devs do read these forums.
The only thing i want is the newest versions of mame.
I always thank the mame devs for the hard work, it needs more people like that in mame to get even fast as it is now.
The time will tell us when the game gets working.
It is not easy, if you wish to see it.
Konami Viper is in the 2000's section, they still need to work on the 90's and 80's first.
One of each time.