Well, there are advantages to both sides of this coin.
First, Brand Exclusive. Longer time to build up storylines, and time on TV to build up midcard guys (because they're gonna be on PPV now, so we need to care). Who is happiest in this scenario? Most likely, the fans. Yeah, we'll get some stinkers on PPV (as happened with the brand exclusive PPV's when they were going down), but we'll have more build for a majority of the matches and probably care a bit more. Plus, as an added bonus for poor schmucks like me who don't get SmackDown!, I only have to get a PPV every other month in addition to the Big 4. Happy me. Unhappy Vince, because he wants to separate me from my hard earned money once a month (twice in October) every month, not every other month. Uh-oh. Unhappy Vince doesn't usually end well for us. Which leads me to:
The current setup of dual or tri-branded PPV's. Lots of title matchs, less story. Obviously, fans aren't loving this setup. Even I'm not a big fan, because I have to weigh whether each card has enough of my interest to invest my money. For example...the upcoming TLC PPV. We have DX vs. Jerishow...why? Because it sounded good to Vince? OK, I can buy that for reasoning. Sheamus-Cena in a Tables Match? Could be interesting. Not much story, again, but the match itself has potential. 'Taker-'Tista in a Chairs Match? Yawn. Pardon me, but I really don't care here. I love 'Taker, and enjoy watching him perform, but I just don't give two shits about The Animal. I think he's a decent performer, decent promo guy, but I just don't care. And Christian-Shelton in a Ladder Match. Jackpot! Now, I'll admit I don't religiously watch ECW, so I don't know if there's much story here or not. Last I knew, Shelton was a face and Christian was dealing with Bill. But...Christian. Ladders. I don't really need much else to know I'm going to enjoy the results. The only thing that could make this match better would be Edge. Of course, with a wonky ACL, he's not going to be playing around on ladders anytime soon, so I'll take what I can get. Well played, Vince. By giving me a TLC match I want to watch just to see if it is pulled off properly or is a shit fest (given that Shawn and Chris are involved, it should be damn good. Those two don't disappoint), and a ladder match with a guy I know can tear the roof off the place, you'll get my money this month. However, I didn't care much for, say, Breaking Point. I just wasn't interested enough to lose my money that month. So fans aren't so happy with this setup. On the flipside, Vince is. He more than likely gets his money from most fans every month, right on time. Creative work is easier because you don't have to really focus on building guys up, you just recycle from month to month. Unhappy fans, but happy Vince.
I think a majority of us would like Brand Exclusive PPV's again, especially if we could get rid of some of the stinkers that made it on to PPV just because. Problem is, the rosters aren't really big enough today (they were significantly larger when the Brand Exclusives were going down). Bigger problem: Vince is happy with the current setup. If Vince is happy, he isn't gonna mess with it. Would we like BE's? Yes. Are we going to get them? Not just no, but "Oh Hell No!"