I really don't think they're adding this to kill off Feast... The amount of planning and development that must have gone into Shatter would suggest that they always planned for its release, it's not a case of "Well, Feast failed, lets go back to Frontlines then", they just had this in the works and now its ready.
Do I think Feast has issues? Absolutely. Much like Diadem though, I think it's potential out weighs its flaws... If they can sort out the matchmaking and rating system it might actually be enjoyable... Heck, I'll default to a previous suggestion; The seasonal rankings shouldn't be tied solely to Feast... We should have Secure, Slaughter and The Fold all brought up to Lv60 (likely with some adjustments to standardize mechanics and scoreboards), and rather than the season being "Howgood are you atlucky are you with Feast", we'd have a Ranking Roulette that would effectively keep all PvP alive... Bit of legwork to balance that out, since Frontlines and Wolves' Den are vastly different, but in the long run I think that would be ideal... Any new PvP they add would just expand the Ranking Roulette, rather than replacing old content...
