We need more than just a quality winger or 13 though, we'll have to redesign our game plan without Taqele. His impact was so much greater than scoring 15 tries (as many as that is), the amount of holes his presence opened up on the inside for Rona and Beale was tantamount to the Tahs success during the middle of the Super season. He was also a get out of gaol free card, if we weren't going anywhere in attack we just 'handsed' it to him and he rumbled over a few guys to get the defence back-pedalling and open up space for Folau and co. on the right hand side of the field.
Sure he had his issues in defence (can't recall any teams actually exposing him outright though) but I think people underrated how good he was because there was an expectation due to his size. In the Reds vs Waratahs game at Suncorp he ran over three guys in the space of five metres to score, there's no one other player in the game who can do that yet that was treated as par for course for him. Sefa is a quality player as is Kerevi but we can't sign one of them and expect to top the conference without radically changing how we play the game.