Already a link for that mate.
http://www.343industries.org/forum/topic/11573-battlefield-4-beta-access-included-with-medal-of-honor-warfighter-pre-orders/page__hl__%22battlefield+4%22
Halo 2 Ranking system was only good because it took a while to level up.
Halo 3 was too easy.
Halo Reach Was good, just no skill system.
Halo 3 + Halo Reach - Halo 2 = Win.
No, it won't.
They said it would be too much hassle and take too long for such a "small feature."
So No. it won't happen, however, controls are being tweaked as we speak.