Reducing the time gained for capping is a bad change for both sides, since as previously mentioned, it forces a lot more forced fights with time constraints. While I agree with reducing cap time and reducing red spawn times as a balance for this map, the real changes this map needs are located in point A and point B, since A is chocked up as a freebie cap for offense.
What I feel should be a change for this map is to completely reconstruct the way A-C-B connect, so that Iron Man Defense becomes more feasible as a defense option, but more fun. Defending B is so easy, defending A is so hard, and C is a decent point to defend and push. I feel like point A would need an overhaul on spawn-access for Blu, rotating power for Red, and then the map would play out much better in my opinion