My vote is kinda conditional on some new items having similar looks, color options and/or stat options of dated gears. I'll go into that at the end.

Remove dated gear recipies.
Leave current dated gear.
Totally optional > Provide a +1 spirit bond bonus to dated items (to help alot of them out the door ^^)
Do not list dated gear on markets. Only tradeable between player/player trade.
Remove dated ingredients or "midway" synthed items (aka the stuff that is only used in dated items, but not the finishd product.) So theres no hoarding of outdated ingredients that could somehow come back to bite.
Change Datted tag to something like Vintage. Maybe Inherited or Classic.

Now you have Classic gear. It can't be reproduced because someone hoarded all the mats for it. It can't be synthedcause theres no recipies for it. But those who have it, and like it, not only still have it, but have a nifty "Classic" tag on it.
It can't be sold in any way besides player trade which for a new player coming post 2.0 would make it a sort of "treasure hunt" if they got a piece of "classic" gear.

Why i said conditional in the beginning is because there are some noticable gear gaps in lower levels that could use some of the Datted skins. I'd rather not see thme disappear because i like some of them.

Some of the dated gear also has some stat bonuses that while not optimum on total, are slightly different enough that you can put them to use if your after a certain stat in that slow.

And also since i hold out hope for Vanity slots, i'd like anyone who comes later to be able to use some of the neat skins that the datted items have without having to find a datted item someone might have.

Also the reason for removing the half-finished items would be 1: because theres no need for them later so you don't need to transfer them when we switch from 1.0 to 2.0. and 2, on the off chance a new recipie comes out, theres less reason to worry about either using a past item again, and folks have alot of them, or making a very similar item that is slightly confusing cause someone may have the old one, and not the new one, and it won't synth.


Those would be my thoughts.