The "Beverly Hills" plastics usually do several facials before surgery and hyperbaric afterward (they also sell vitamins and all kinds of wingwangs to put on the face to “help it”). My "doc" does not. I have seen no difference at all in the immediate and post-surgical results with or without this “pampering.” (Oh, of course the "Beverly Hills guys” literally charge 2-3X more than my "doc.") I wish I could state actual names and surgeries … but, I live in California and we have these malevolent things called lawyers!
The major contributor to NOT healing properly? SMOKING! We won’t do a facelift on a smoker — period. As you know, smoking reduces facial blood flow and healing is greatly reduced. If you smoke … STOP! I guess smoking could affect electrolysis healing too? (Almost nobody smokes now in California.)
It does make theoretical sense to epilate in strips, as you say. In practicality you don't need to do this. I just finished up a guy's entire back and shoulders... 5 hours per day and 50 hours total (in about 10 days). He's doing great. He’s a big guy and had maximum dense coverage.
Capillaries are "exercising" (expanding and contracting) all the time (heat regulation and all the other functions). The body has a great collateral blood supply (unlike the face) and I have never seen a healing problem on the body: even with massive amounts of hair removed in a short time.