I'm actually currently testing an update for the mod that tweaks the lifestyle a little more and lets traits only affect the lifestyle if the Sim also has very little friends (for close knit) or a lot of friends (for networker). It always takes a little longer to test changes for this mod as I need to test with different Sims over a longer period of time, but I hope I'll bei able to release the update within the next few weeks. I'm still looking for a way to have Sims with a medium amount of friends not develop any of the two lifestyles, but that has proven a tricky task so far.