RBR are very likely to be a championship contender again next year. I'm not sure if they'll have an advantage, but I find it very unlikely that they would drop below the top three teams.
During last winter, many expected Red Bull to drop its pull rod rear suspension because it's not the best fit for a double deck diffuser. Next year though, with the DDD banned, I foresee several other teams copying the rear pull rod suspension - and yes you can write that down and confront me afterwards
. It's difficult to see what performance influence that might have, as RBR have the experience, but others may jump the pecking order if there is a reasonable performance advantage.