I'm not too fond of it in its current state. I like the idea, and I like that it's designed to promote attacking and discourage camping - at least that's the impression I get with it. However, I think the rewards of kills and structkills are way too far apart.
I recorded two demos this morning: one where I was constantly trying to kill bots, one where I was just charging past them, ignoring them, and killing whatever structure I could. With the first tactic, I was perpetually stage 1. With the second, once I actually started doing that, I was stage 2 and even 3 in no time.
What I liked in Tremulous was that, in my experience, stage 1 and 2 were very DM-oriented, while at stage 3 you can tear the enemy base apart and win. This means you want to get stage 3 before your opponent does, so that you'll have a big advantage. You had to go out and kill enemies to do it, although camping could also be effective if your opponent is gullible and kept charging at you in your base. The counter to it was pretty much deploying an equally boring tactic, which is something I didn't like about Tremulous. But generally, you had to beat your opponent in battles to get to the next stages: a very skill-based mechanic.
This is a bit of an other extreme. I've only played a little bit against bots, but it seemed that killing enemies was not viable at all for stage progression; instead, avoiding fights and just trying desparately to get a couple of struct kills seemed to be the new meta. I get that destroying the base is the main objective and that you want to encourage people doing that, but it seems strange to me that you get stage 3, the thing that in my opinion is the main thing to go tear the base apart (there are always exceptions, of course), from tearing their base apart. Or at least, trying to kill as many random structures as possible. It seemed that even sawing a barricade gives more confidence than killing a bunch of goons.
I guess it's possible that you want a less DM-oriented game. But it'll result in lots of suicide rushes and very little fighting, which is not something I'd enjoy much.
About the demos: they take a while to 'get going'. The first one because I'm bad (I'd come up with excuses and blame it on my inexperience with unlagged, bad fps and sleepiness, but I'm also just horrible at the game). The second one because I get lost and let aliens distract me at first. They can be found here as I couldn't attatch them to this post.