No jackpots? Shouldn't affect multiball
Yes, they are in a fixed sequence for pretty much every known version. Something like 5M, RPM, Video Mode, Spot Gear, Multiball. Might have a couple of those mixed up.
True for all versions, but not in tournament mode.
I don't believe there are cross-player issues.
This whole thing has been discussed constantly. My personal opinion is L-2 generally works the best if you don't take secret mania. You shouldn't be taking it anyway, so you kind of deserve whatever the heck you get. The L-5 multiball restart business is just bizarre and stupid.