My plan now? Or my plan heading into the season?
My plan now would be to fire Juan Castillo if the blocking isn't fixed this Sunday. I'd put McDermott on notice that he's not going to be the one hiring another offensive coordinator - the next coach will be doing that, so the offense had better shape up. And I'd tell Beane (if they haven't already) that we're not in the business of building a church choir, and they've already pissed away $3M on a lottery ticket WR while there are street free agent WRs who would at least demonstrate some effort on passing downs, such as Kendall Wright, Rashard Matthews, and several others - the GM and his highly-touted (and well-paid) personnel department better find some players or they'll be looking for jobs in January as well.
In the meantime I'd also make it clear that if they don't fix the blocking and the scheme, they need to sign a QB who can manage this thing and absorb the pounding for the next 2.5 months. If Matt Moore is too smart to subject himself to that, pick one of the other schlubs on the street and let them run the offense until the blocking situation is sorted. But getting Allen injured is a one way ticket to pink slip land.
Also, I'd pull John Miller ASAP and put Teller in the lineup in his place. John Miller is an abortion of a guard.