Watching the match and reactions and reading the responses in this thread I feel like WWE couldn't have found a way to make their roster look weaker. Cena, the guy who dominated a decade, looked second rate to Lesnar - the guy who can't even be bothered to show up regularly as WWE is beneath him. In turn, everyone in the company not named Bryan or Orton looked second rate to Cena, making them third rate in the grand scheme of things.
Breaking the Streak and squashing Cena are two of the biggest rubs in the history of wrestling and could've made two stars, but were given to the guy who was almost as established before and hasn't proven himself to be a massive draw. This might be the strongest push in the history of wrestling alongside Goldberg, and I see Brock in a similar position to Goldberg after winning the title.
If Brock doesn't defend regularly it devalues the company as a whole. The world title match is the main selling point of PPVs / Network Specials. Taking it away will hurt buys and interest. Additionally, making the regulars fight for the best of the rest position won't give them a lot credibility either and makes the program, again, look second rate. So if Brock is still a part timer, have him lose fast. Otherwise, try your best to make your guys look credible against the guy who stepped in for a cup of coffee.
Whoever beats Lesnar needs to win methodically and decisively. Counter the meatheadedness with intelligence, find a weakness and exploit it.
So, who should do it?
Reigns? He doesn't seem to be able to back up the hype (yet). Overpushing will make people turn on him, and turn mercilessly. He needs another year to warm with the crowd and doesn't look like the guy with the antidote. His power style wouldn't contrast all that well, and you can't believably outmatch Lesnar with power.
The Rock? Great choice if you want to make the regulars look even more terrible and kick the legs out from under your roster. Same for HHH or Angle.
Cena? Eh maybe, but it makes the last match look like a waste.
Cesaro? Fallen through the floor.
Wyatt? Cena made him look like a total chump, and Cena looked like a total chump against Brock.
Rollins, alongside other difficulties, has a huge heel vs heel hurdle that would diminish the showdown. Brock needs to be slain, not screwed.
Bryan would be perfect, but he's out until January and only an option if Brock defends regularly, for reasons described above.
I'm stuck with Ambrose, who has a great crowd connection and is crazy enough to find a key to Brock's weaknesses. Screw the authority by conquering the briefcase and conquering the conquerer of the Streak, but make it a fair cash-in and heroic victory in a showdown. He could use and most probably handle the rub to shoot him to the sky, so he's my choice.
Overall I'm worried, but it will be interesting to see what the plans are (, if there are any, that is
).