Ok, so, pretend it takes you 10 seconds to destroy the Castle Gate. And it takes you 2:32 or more to get there. I don’t like that the last second is worth 25%, and that the previous 9 seconds are also worth 25%, whereas the rest of the base is worth crap. It’s incredibly disheartening to pass through the entire base, with all it’s skull towers and spell-casting monsters; to have used scrolls to do so; to get the very end; and to be told that I “only completed 50% of the base.” Makes it feel like the whole raid didn’t even matter, just because I didn’t have those 10 seconds.
Here’s what I would suggest:
Move the milestones, to 25%, 50%, and 75%. I’ve always thought it was kind of silly to have a milestone right at the end. That literally contradicts the definition of a milestone.
Make the Castle Gate health worth 10% of overall raid.
Make the Castle Gate actual demolition worth 10% of the overall raid + treasure chamber.
Because, again, there’s nothing more disheartening than completing the hardest 94% of a base, and being told that you “only completed 50%” of it. If anything, this is just a /step/ towards actual accuracy.