To answer the original question, yes, there has been a 7th regular round played in one show. The one time I saw it occurred last season, and it is the only time I've seen it. A fourth toss-up was not played, however, as the player who won the 3rd toss-up got to start the round. Likely, there is another instance where it has happened though. Last season, IIRC, the Round 7 started as an immediate speed-up, and Pat didn't really play much into it, about how they might "run out of puzzles" or something, like he could've easily done and has been known to do in the past.
And, to boot, I think it's a bit humorously ironic that I seemingly have the longest list of gripes compared to others. I don't know if I could call myself a true purist though, as I do like the Jackpot, Mystery Rounds, 10k space, and the Prize Puzzles, but I'm not so hot on the Wild Card, gift tags, toss-ups, the lack of unique prizes on the show (a bit of laziness I feel as well), the same number of ads as a friggin Super Bowl game, and the bare bones set.
I'd ax one of the first two toss-ups for sure, and I've love to see a new wheel layout within the next few years (again, issue with laziness). Seeing the same basic wheel setup for 30 minutes, 195 shows a year, for what has been almost a decade now, has gotten boring (not that the average viewer would likely notice). Oh yeah, as for the set, get a $100k sign or put some kind of border around that puzzle board. If you spent that god-awful amount of money on HD conversion, FLAUNT IT!
The easiest change, though, I'd think would be with the prizes offered. Don't tell me the desire for winning appliances, jewelry, TV's, and such has dropped off on game shows in recent years, I think Drew would object in a heartbeat...
