There were no brick and mortar sales for Dishonored during the window that weren't Black Friday prices, and (at least at the time, if not still now) getting them to match online places like Newegg were ymmv. The BL2 price match you mention is also ymmv, since $10 off any $60 game is a promo and not every BB price matches promotional prices like that. As for waiting, I wanted the free oil lamp from Dishonored which meant I had to pick it up right away before the few they got went "missing."
Dishonored was $40 at GS the other week. It was right around the 60 day mark, so if you bought it on Day 1 it was dicey. If you're not immediately opening up the game (like you did with Dishonored) you should pick up any preordered game the following Tuesday to maximize your pm window.
Borderlands 2 was $50 via TRU's $10 off any $60 game. I bought all of the games from the promo save for NCAA, and I was able to get $20 back on all of them except BL2 and 2k13. Both of those I only got $10 back. Combine that with BBY's high TIVs and I made profited $20 on most of the games this holiday.
I appreciate your willingness to help, but please understand that I'm not asking anyone for advice on how to make GCU better. I've been a member ever since they put Ico/SotC in the mag, and have received plenty of games/trade credit because of my membership. I've already said that this program is still a good deal for the money. My point was that unless I can get something extra out of the coupons between now and my renewal date, I will not be renewing again as this program no longer works for me.