Depends if you can delay your opponent from decapping those points while the Typhoons fuel up, You're kind of assuming the ability is the /only/ thing defending the map during those 70 seconds, which isnt any more realistic than the idea that every point will have a BOFORs and 17 pounder defending it. I'll agree that 250 muni is an absurdly steep price, but I'd still love to see what it actually DOES in a best-case/average-case/worst-case scenario. Might be able to see which, if any, changes might be warranted for the ability.
What was (or is?) the bug that was affecting it, anyway? I've heard people say it's "bugged", but never heard what that bug was.
As an aside; I can't say I like these UKF abilities that just target the ENTIRETY of the frontline, rather than merely a couple sectors/an AOE. Feels really gimmicky.
Close The Pocket is similar... but takes more setup.
Lets not forget that axis also has abilities that increase decapping speed and even allow vehicles to do it in literally 3 seconds.