Each expansion I get hyped and also worried about more skills.

[Bacent]

All we need is a combo system like in PvP where (sensible) skills flow into the next but it's the same button. And I think I'll get my wish if the last MSQ in 5.55 is anything to go by (if I'm not mistaken).

I don't think we'll actually get that. The battles where we're playing as other Scions they have super simplified hotbars so you know what to do without people going 'oh god what icon is that' so that anyone could really do it.

Some skills branch, and some can be used in reverse order, ect.