I haven't seen a ton of David's work from Texas, but his Florida heel run wasn't anything special aside from the novelty of watching one of the Von Erich's work heel. I 100% agree with Sek's comment regarding his charisma, even watching the little bit of David featured on the documentary of the WWE World Class DVD, he looks far more fired up and excited than Kerry or Kevin. Of course, that might be the execption and not the rule. Other than David vs. Kamala, which Bix pimped on DVDVR a ways back, I'm at a loss for any great David matches that weren't the Freebird feud.
I would agree with this to an extent. If you compare these three teams to later teams like La Resistance, Cade and Murdoch, Deuce and Domino, Hurricane/Rosey, or Cade and Jindrak, no question that the three of them were far more over. The only team who might have come close was Booker T/Goldust. But, as teams, they never really made it to the top. They worked occasional main events, but were either doing gimmicks like a six man tables match with Jericho and Angle teamed with them, or worked against other main eventers like Hardys vs. Austin/HHH or E&C vs. Rock and Taker. They were treated a lot better than the later tag teams would be, but I don't think they revitalized or revolutionized tag team wrestling.
I liked this a lot, but I'll agree with Ditch about it being overrated. The main thing that I thought held it back was because the idea was that Cena was going into the match hurt (his ribs when Umaga splashed him through a table) but he never really sold them. He's clutch them when Umaga went after them, but there wasn't much beyond that. Aside from that, it was fairly smart worked. HHH or Michaels wouldn't have done anything close to this, they'd have been more likely to take everything Umage threw at them, and then Hulk-Up and finish him. Cena was smart enough to get his win by avoiding Umaga's biggest shots. Plus Umaga's bumping and selling for Cena was great, and throw in a few cutesy spots, like when Umaga ran across the announce tables, and it's quite the fun match.
The absurdlys slow cover was a bit much, but I didn't think anything else was too bad. HHH's promo about Booker's "kind of people" not being ready for the title wasn't very tasteful, but it was Wrestling 101 to a degree. HHH doesn't think Booker is worthy and the next week, Booker pinned him in a tag match. The match itself was fine for the most part, HHH stooged a bit, and got his control segment when he pulled the rope and dodged the sidekick, and then started working over Booker's knee. It was one of the few times that the Pedigree bump being taken on the knee actually seemed logical. But the ultra slow cover was stupid.