First things first... this isn't personal... I'm just a very disappointed customer.
I've been playing DCS since I was a teenager and the game was called LOMAC (Lock on Modern Air Combat)
I've about 1600hs on DCS according to steam, and I've played about 50 campaigns so far (I think that campaigns are a great way to become proeficient in a module and enjoy DCS), so I'm really used to AI misbehaviors and bugs, but they shouldn't keep you to complete the mission and definely not ruin the immersion in DCS.
Agile Spear is the most bugged campaign that I've played so far, and its not only minor bugs neither one or two missions, the first half was ok but missions 8 until 15 have major issues. (And you can't even find people playing those missions on youtube, sometimes I check youtube to see if someone played it, what was suppose to happen... but my guess is no one did it because the missions are broke (8 until 15)
I really believe that it must've been worked at some point in the past, so maybe I had bad luck on timming buying it and yes you've been updating it, however I don't think you played the missions because update after update mission 8 was still broken and unplayable until the last fix (still with some minor bugs like the apaches "Badger One" don't take off anymore). I've been complaining about it since august, (not overnight) So months aren't a reasonable amount of time to fix it?!... And after those fixes did you play it?
I Know you may be short on staff and overload with work but still, it doesn't worth to release a fix, don't play the mission and it is still broken.
Currently I'm a real life airline pilot so I guess you know I don't have all the time in the world to play DCS at home with VR... and I've wasted so many hours trying to play this campaign and this is very frustrating, so I gave up on this.
When I speak about good developers, take reflected simulations as an example, they build far more complex missions (like in Speed and Angels they even give you a grade after you perform a maneuver) and DCS update after update they keep working like a chime.(No bugs whatsoever).
This is just my opinion about it, again don't take it personally but I really wanted my money back on this one.