I was referring to the fortress. I agree that more points would be good.
On the last point, I don't recommend adding an additional point of complication to a mechanic that is already complicated, as you mention in your OP.
I agree with the other stuff, especially the need to nerf the high volume capturing scenario and not the small volume.
To clear up some confusion about the nerfs that I introduced ahead of R28: by increasing the default regen rate, we essentially increase the number of units needed to achieve the "high volume" capturing scenario. At the same time, you are punished less for having an empty CC, giving you time to garrison it. I don't say that its perfect, but its better now, and in my games I see people go for siege more often.