I'd be in favor of being forced to start a bench player for the same number of games as the ineligible player was used (not just started).
Enforcing a temporary monetary fine seems logical on one hand, but on the other, it could be double jeopardy for the offending team because of the increasing penalties in waiver moves.
FYI: I will be out of the country and away from a computer from Sunday morning until late Wednesday. We've waited an eternity already for the next season to start, and I'd hoped it would be underway by now.
If draft and waivers occur during the period I'm away, I could be stuck with non-qualifying players on my roster, something I've been careful to avoid in setting up my draft. Hopefully, I won't be penalized severely if that comes to pass.