Gunbreaker - Leveling Question

[BiffWellington]

I don't think that's necessary though - you don't *need* the Lv70 armour until you move up into Lv70 content. You only really need to be geared to match the content you're currently doing.

True, but in the process of leveling from 60 to 70 you're likely to find yourself capped on poetics more than once. It's good to be able to spend them as you go, so you can earn more.

Also, I'm not sure, but do the vendors unlock once the expansion is no longer current? You can access the Heavensward vendors as soon as you reach Idyllshire, but was that the case during Heavensward or did they change it after Stormblood released?

Now, this I'm not sure about; I just started this game last fall. I do remember having access to those vendors right off the bat when I got Idyllshire, now that you mention it.