I think a question that should be asked is when should tier 6 gear be available?
Everyone has a different answer. When I play I typically get bored by day 25 because I have everything I want. Then again, I play on 2hr days and solo most of the time, so that's like 50hrs of game time. Which, if we are being honest, is more time than most games take to complete.
So when is end game to you? At what point should you be at end game? That to me feels like appropriate tier 6 territory.
If people want tier 6 at day 100, I'll never play that long before I start a new world. 7d2d to me is all about discovery and finding the perfect spot for a base. All that has been done by day 25, if not sooner for me.
At what point are you asking for more of a reason to keep playing than this game is designed for?