Wouldn't be what I'd spend the gold on, but hey, go for it if you want to.
Anyone wanna do Mythic dungeons (EU)? I'm yet to do one, and my guild is too inactive to find a group there.
I think like this:
I can make 1,5 million gold in about 100 hours played doing garrisons and AH.
That gives me a unique mount I will have to wait 2 more expansions before I can start soloing it with a 1% chance drop rate.
I also get probably at least 1 loot per boss + 10 of my own bonus rolls => 25 mythic loot pieces. 4 pc T18 mythic <3 + class trinket <3
I also unlock the Curve achievement so I can cheese my way into normal or hc groups so I can have fun each week getting the ring upgrade items.
Having mythic items from the start is a hell of an incentive to care about the valor upgrades. I would rather spend time getting valor for that than for my crafted items or lfr gear or kazzak gear.
With that kind of gear + curve achievement I can probably also start doing mythic dungeons more easily which is more content to do.
I also unlock the mythic shipyard cache which is a chance to get warforged items every 2 weeks.
I'll wait with the boost until after the patch so I also get the moose mount started.