I totally agree with the request.
Bolt is an awesome project for starter guys.
I am just coming from Launchbox. I like it very much but it require a lot of work.
Having something already ready is the maximum.
I think that taking rom from another set require some adjustment. Bolt is for 6 buttons arcade cab. But I have already set different joystick for each emulator, just having fun.
I am not able to use hyperspin and I am waiting for some realease.
I'll download the 420 set roms, because I want it, but having it in Bolt version should be good.
I'll make another post because I want Daphne also in bolt.
I hope for some reply.
If I can help doing some bolt I'll be happy.