One thought would be to use the "drive goal workaround"...BUT, when setting up your opponent's autosubs, set their DB autosub to 60/80 (or higher). I have not tried this, but I'm guessing that if your CPU opponent is a team you control, whatever autosubs you set will be the ones they use. If you are playing a strictly CPU-controlled team (i.e. single team franchise without any workaround), I think they take whatever autosubs you set for your team. None of this has been tested nor confirmed....but it might work.
One other thing, I've been toying around a bit with using 55/65 autosubs for WRs and DBs...looking to refine the coverage and interactions a bit.