Supposedly the armoire/armory chest will be improved in 3.0/3.1/3.x. And in the meantime, we're supposed to get additional retainers to alleviate the load.

So...why wait?

I need those extra retainers now, and I'd really prefer to reorganize all my space now as opposed to the first week of server maintenance and lag that Heavensward will inevitably bring.

Why not go ahead and activate the extra retainer(s) as a preorder bonus now?