I don't want to sound rude or anything, but I don't think basically rejecting a large group of people who tested your map and commented on it will help you get better feedback.
Bad maps are only played by a select few here, those who still actually care enough to try them properly, so these maps will probably get better feedback, or none. When your map is well-known, it's played by way more players, so you obviously get more clutter. On top of that, if the map is also good, testers used to way worse maps won't even see any problems, let alone comment on them.
Or maybe your attitude is a bit too... perfectionistic? I mean, look at the Valve maps. A huge amount of players play them every day and they're far from perfect. Because it doesn't matter. Only a tiny fraction of players would ever notice something as insignificant as... bomb cart tracks that overlap each other.
In my opinion, you should just go ahead with your map. If it's not released in time, as you said, all efforts will be in vain. It's a sad fact, but nobody cares about how something was made: What matters is only the product.
There's a point of saturation and there are diminishing returns in playtesting. That's good because sometimes, you're just clinging to your map.
You can never finish a map anyway, you can only stop working on it.
/rant