I know I'm gonna sound like a day one noob but I just started playing this again with a friend, so I forgot about this.
Pro perks need to be much easier to get, because the challenges ruin all gametypes. I'm playing on PS3 this time so I'm back at level 1 and I have to spend a lot of time getting pro perks which make a big difference in most cases.
Few of the challenges are made with winning in mind. In fact, nearly all of them involve lots of losing.
For example, if you want Tactical Mask Pro, which can be a great perk with Flak Jacket Pro (only bullets are deadly), you have to get 60 kills using one of each of the 3 tac grenades. So I can play forever trying to play right and get Nova Gas kills, or I can keep entering and leaving matches and go negative repeatedly until I find campers. How is this good for teamplay?
Flak Jacket Pro involves me throwing back five grenades, and being that Semtex can't be thrown back, and people usually cook the grenade, I either have to find the perfect spot (Firing Range snipe tower if I'm lucky and don't get picked off on the way up) or straight up putting myself in harms way (bomb points in Demolition, whether its a smart idea or not, mostly dumb because there are people watching the bomb with guns ready), to get it to happen.
Marathon Pro is a very useful perk. So that makes Capture the Flag even LESS of a viable mode because nobody wants to help you win. If you've got the flag, nobody wants you to return it, because they want you to die and drop the flag in hopes that they get it and bring it back instead. The fact that you have to cap it 15 times and that there's a long respawn times, makes Marathon Pro an extremely difficult pro perk to get and Capture the Flag an awful mode.
Ghost Pro requires someone to throw down a sentry gun, which comes up rarely. Nevermind that you have to be the one to destroy it without the safety of Ghost Pro to do that.
The only efficient way to do these things is either with a great team of friends, or by boosting with a friend in some cases, something that you can get reported for.
This wouldn't be a big deal if you didn't have to re-earn them after prestiging but you do. And some people prestige 15 times becoming a real detriment to your team. It must be even more frustrating for players who just can't get em.
I can't say I have any statistics about this, but I imagine I'm not alone in ruining games to get pro perks. If it were up to me, I wouldn't have to go to these lengths.
Not a fan of this design.