...but it's not meant to be used for area denial - at least not in it's current state. It has a current role (one thats fairly unique within usf), and it performs really well within that role. Fair enough if you think its role should be changed, but you haven't made that argument and haven't given reasons why this would be a good idea.
And sure, other USF offmap artillery options perform the role adequately (though I'd personally argue a little less than adequately). Time on target, though, performs this role really well.
You mean the 240mm offmap? An ability hit enemy by chance?
The effective area denial skills are OKW overwatch or OST railway. US and UKF heavy offmap artillery are just waste of ammo.