Action changes to:

[Rongway]

There is no good reason for RDM's Enchanted combo to occupy 3 slots. It's 1-2-3 without variation.

That's a different discussion. It's a failure point. You can activate the buttons out of order and you can still get mana stacks from doing so. You can even (wrongly) mix single target weaponskills with Moulinet and still complete a "combo" that you can follow with a Verfinisher combo. But we're not talking about that here. We're talking about mutually exclusive actions. You can never Between the Lines unless Leylines is active; and you can never activate Leylines at any time that you would be able to Between the Lines; so they should not be two different buttons. [High] Jump's cooldown is longer than the window in which Mirage Dive is usable, and Mirage Dive cannot be used unless you have used [High] Jump; they should be a single button.