Guys, I'm really getting angry here. Read my post above. You'll most likely have those stats, just like you already had them before. You suggested assist stats, the official answer was posted above.
If we could get a scoring system anything similar to what we had in Splatterfest of Azeroth back in T1, I'm happy.
LP & Nanunanu scoring was quite close (awarding points for MAing someone, grabbing flag in midflight ie.) but cap & kill assist should count as well.
More variable you have in scoring system, more accurately scores will tell others how good the person is at CTF in general (my 2 cents).