I just finished the mission and I have to say it is the level of intensity that is fitting for titan level the 20 mins went by in a flash, and they of course removed the ability to cheese it by triggering the timer without you building the TC and actually made the orange giants base difficult so you cant cheese that either
in some ways the level of intensity was made not overwhelming by the ability to reuse god powers, flaming weapon timings were crucial and having a chain of healing fountains was basically just a HP boost on your army
One thing that I think was a bit lacking is vision, especially how with how good the enemy is at sieging you being able to have some foreshight as to which side the waves are coming from would be nice.
The other nitpick is the underworld passage timing and the fact that killing the pegasus doesnt prevent it, understandable to make it not trivial, but if there was a way to maybe make it like a repeated attempt or something