I have no problem extending the panel to 2 hours if y'all want it. However, I think Aya's concern is that she wants to be sure there are enough acts to fill that space without everything being awkward and dragging on.
On my end, it would need to be requested _very_ soon. I am in the rough draft stages of creating the panels schedule right now. At this point, it wouldn't be hard to extend the time. Next week, though, or even in a few days, it'll get a lot harder, as most of the time slots will already be full.