I believe the OP is referring to the time frame in which new things come out and the gear selection this leaves us with. If each update is a straight mathematical upgrade from prior content there is very little in the way of user choice. It's a static choice, pick the mathematically superior piece. There is nothing wrong with new gear coming out and replacing old gear, but the timeframe of usefulness is important, as well as the appearance of player volition in selecting gear.

Right now allagan/mythology is mathematically superior to CT gear is mathematically superior to darklight. This is a very mundane carrot on a stick up a ladder approach. Allagan paired with mythology does give us some interesting options, but the method of acquiry is very limited and the choices are gated by accuracy capping.

Personally I think SE has a very narrow field of vision for many things in the game, and each facet of the game is very compartmentalized and separated from all the other facets.

Why not allow for more options that can be earned via treasure maps or beastman reputation grinding? Why not implement more gear from dungeons that is not clearly inferior?

Simple answer is the work required for this type of progression is exponentially more involved. But honestly, this is what I was hoping for after the game established itself. It creates a much more engaging overall gaming experience as well as allowing for more depth from a player perspective.