I'm not very organized so bare with me.
The screenshot of a bunch of T's in vents is obviously when the vent bug occurred, you normally see 2-4 people in vents (6+ rarely) so I don't think its a good example of the "unfun".
The secret that kills people near the pit is INCREDIBLY skill based and difficult (also made me look in hammer editor to find it cuz no one answers me sadface). Its open for a couple rounds and its pretty inconsistent on how many people it kills.
I might be biased because I mainly play T and find the map highly enjoyable. (keep in mind I suck at rebelling and I get LR most of the time)
The guns falling into pit, guessing here is either its a player clip or a bad brush. I'll check it out when I arrive home from school.
The 25 point lead by T's was on an extend. The point difference is up to CT's aka they gotta play better as said in other replies.
If stuff was changed, It would be a difficult decision and possibly time consuming (I have basic experience in hammer).
There is also the factor that most of the time maps are played once or twice a day. So give us T's some fun

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It adds some variety and some new challenges for CT's. T's also have to now play more carefully in vents (ex: Shifting on Ladder in Vents)
The swaps are mostly part to
BAD CT's people camp armory and is audibly heard by T's in vents. An example of someone who is good at playing correctly and efficiently is purducken, they don't camp the vents but wait for the T count to be confirmed.
I enjoy this map it's PogChamp