good questions... commanders should discuss amongst themselves (russian and german or british and axis) what they want specifically for each match concerning classes and class loadouts. The admins are only concerned about the basic information.
Ba-64s are not available right now.
I think the ruling should be that a sql can have only 2 smokes for the entire match, but there is no rule on how many sql's you can have available. As for bigger matches it makes sense that there is more then 1 sql per side.
arty is an equipment allocated in the roster information however.
any other questions please don't hesitate to put out there.
vr,
Werner