While I think 10+ minutes stalemates are a problem, this ruleset turns everything into a bunch of chaotic endless dm that isn't even that fun to watch tbh. Of course it's not random dm as fast decision making and team coordination are important more than ever, but I really felt like the extra fast pace was actually more boring than a slow or a traditional one.
Also, no timer and 3 minutes for each cap take away a part of the game that, like it or not, is just as interesting as going 100 miles per hour: slowing the game down and being able to face teams that are better than yours in terms of fast pace/raw dm/whatever. It completely removes a huge part of how you could potentially play a match.
Of course froyo are so good they would've still won with traditional ruleset, but this is the kind of gamestyle where they always excelled.
Golden Cap should work similar to EU imo, it's just the best option.
I think trying to find the perfect balance between boring infinite stalemates and just as equally boring lightspeed back and forth TF2 speedrun should be the way to go