In my point of view let's examine what we have.
5 tier's weapons/armors (or 4)
3 tier's accesories
and a bunch of other things.
In order to keep your player's is to make then not get bored farming/pvping. You have to give a meaning on those things as L2 Pride did. What you see nowadays is everyone releasing the last pack of the server and not going on babysteps, as on L2Pride.
Now what I mean, since you have so many custom items release 1-2 tier's 1st make it a little bit hard to get them also enchanting is a major factor don't do the shop getting item's +14 with chance to hit +19 or who knows what. Give the low tier's value. Then as you pop up on tier's and releasing more, when you think is the time to move on another one gradually make the lower tier's easier to be obtained and enchanted.
The reason?
Is to give the newcoming players the headstart to come closer to good geared players. I still remember farming in party for that dynasty tier 2 and killing raids with clan to obtain some Icarus back then and they were having value. Now every other day someone with the pack makes a server. That doesn't go for this one as he wanted to make his own farm zone and economy system, but unfortunately it failed.