I'd still just like to see minimum item level runs added to the Duty Finder directly (e.g., a second checkmark one can fill, to queue for simultaneously with a regular version if they so wish) and give proportionately higher rewards. Normalize options for more significant challenge without necessarily taking away the ability to leave content a breeze for those who don't want it.

That said, ability acquisition and the appearance of mechanics really should be hastened (e.g., a full rotational kit [50 to 56-esque] by level 30 and a decently fleshed out kit [70-esque] by 50), and content nerfs reverted in favor instead of simply checkpoints before bosses in dungeons and at the half-way points of final-boss-in-tier raids.