It was just too much man. I felt sort of bad for the casters trying to keep up with everything, the game constantly being a slugfest either way. I think the idea behind it is inherently flawed as well, thinking that TF2 needs to be faster paced to make the viewing experience more enjoyable.
League is one of the, if not the biggest esport on the planet right now and has 'stalemates' aka 'lull states' for like 50% of the games where nothing notable happens. I think having slow and tactical gameplay in TF2 is fine. Giving both the players, casters and viewers time to catch a breath and think about what just happened.
I'd say maybe 5 minute round timers could be more interesting, but of course all of this has to be thoroughly tested.
Edit: I also think tactical pauses are dumb and can completely ruin the flow and momentum of the game. Just have set half times or no tac pauses at all. I think they can be abused heavily