As an Outlaws fan I wasn't really impressed with Rawkus most of the season. He was either slightly above average or just average, which isn't good enough to compete in the upper echelon of teams. Hopefully his performance on Team USA can show that he is really capable of being one of the premier Western flex supports, because there were quite a number of people that weren't happy with him being picked over Sleepy. Boink will likely remain a sub or be made a two-way player since it's pretty evident based on how much stage time bani got this season which of the two main supports is preferred.
The tank line needs no fixings. SPREE/coolmatt and Muma/FCTFCTN are well rounded enough IMO that no changes need to be made here. If anything, FCTFCTN might end up being designated as a two-way player so he can get actual playtime as opposed to just being a scrim player but if he were to go to GGEA he'd be competing with smurf for the starting MT spot.
But of course the biggest fish that Houston needs to fry before making themselves a true upper-echelon team is their 2nd (and/or 3rd) DPS. LiNKzr for obvious reasons will remain a staple for them, but if Houston doesn't develop ArHaN, Jake, or clockwork in the offseason to be up to par with a top DPS combo like So0n/Agilities, SBB/Libero, Profit/birdring, they will continue to struggle. Jake and ArHaN have potential to compliment LiNKzr finely, but I'm not so sure about clockwork. He's got amazing mechanics, but the limited time that he was given to prove himself doesn't really show that he's worthwhile of getting regular starting time. Hopefully I'm wrong, but I expect him to be designated as a two-way player.