I didn't have any fun on this map. Everything feels like it wasn't thought out at all, and the layout does not complement your gamemode well at all. Please try reworking the map, especially the gamemode, altogether. Look at what cp_shelter and cp_standin do (and try to see what they do right and do wrong), as they are the most visibly similar gamemodes to this.
you're basically suggesting to convert this to a different gamemode, also seems like most people liked the map so i'll stick with orignal idea, and original idea is asym. map with 4 points available to cap at any time, but i deffinetly will make some big changes to the map
changes to map philosophy: now exits to middle for both teams are dropdowns, this should reduce spawn camping and direct players to points since now all routes available from mid take you to objectives and only after going trough objective you can get to enemy spawn(unless you are soldier or demoman).
During playtesting people suggested making route connecting 2 starting points but i don't think it will work good since it will make map more maze-like, one complain i heard about cp_standin...
latest playtest wasn't really good so i'm releasing vmf because i don't know if i'm going to work on this map, you can do anything you want with it, make your own version of this map or even gamemode itself