That last point is kind of horrible. There are two, narrow spammable routes up to it, and red can put a sentry outside their spawn and defend.
My sggestion would be to move red's spawn to ground level, and add an extra route up, and widen the current one. If red are fighting uphill too, blu get the advantage that, once theyre on the point, theyre harder to push off, which should be more interesting gameplay than turtling and fruitless wave attacks.