Expanding on both #2 (adjustments) and #3 (better Short Yardage) is really our quandary at TE and RT. Simply put, every play in our offense has multiple ways of blocking it. Typically part of each weeks practices, film study, and walk throughs are going over how we'd BEST like to block things. The OL typically makes calls based on that come game time, and generally has a backup plan for how we will block it if our BEST option isn't working for some reason.
In our scheme's BEST blocking options, we count heavily on the TE to handle DE's and LB's. Routinely blocking them alone. When our TE can't do that, we have to go to plan B or even plan C for how we will handle whatever the defense is doing. Sometimes the problem is just a mismatch and our TE can't handle the DE or LB's. Other times the Defensive scheme may be doing something to overwhelm our TE. In either case, when we have to go to those plan B or C's it puts all of our OL in more difficult responsibilities to help cover what the TE isn't able to do.
Going back to your original post for us to adjust better and have a greater showing in short yardage, we really do have a TE problem. We also have a very obvious RT problem. Everyone knows it, don't let Grier (whom everyone knows I love) and McDaniel (whom everyone knows I love) tell you otherwise.
So if we can find a Blocking TE and a reasonably solid RT we will be in great shape to handle your #2 and #3 points. The TE is an absolute must though in this scheme in it's optimal format.