Okay, so here are some things I noticed while running around your map.
-No lights.
-No Resupply Cabinets.
-No Health/Ammo Kits.
-Large sightlines,
(One of many long sightlines into spawn)
-No Team Colours on each side of the map (Red / Blue)
Here's some of my Opinions.
-In general, the map feels overscaled, there's many places you can take fall damage from very easily.
-These blocks are hard to get up and I think It would benefit the map if they were easier to get up. (If you're not keen on using stairs or a ramp I'd recommend something similar to the prop ramp on mvm_mannhatten)
-I found I ran into the wrong side of this door many times.
-You spawn facing a wall, not in the direction of any exits.
-For such a small room, the Capture Zone is tiny.
(Not capping at this point)
-This balcony above the spawn door serves no obvious purpose other than to help spawn campers.
(Clip it off or delete it maybe)
So, there's what I think, sorry if I sound too harsh.