First off in an MMO when levels caps go up most things become obsolete that's what happened with TTK, second I've played MMOs where 3 expansions came out over a couple of years and all the expansion did was add tons more content and more gear to choose from no level increase and it didn't make all your gear obsolete. In one MMO I played 75 was the level cap and lvl 50 gear was still worth using. Reseting a game every couple of months gets annoying after awhile especially with RNG, what's the point spending 80% of your time in a game grinding gear that becomes obsolete in a couple months.