Would be really nice if you could collapse/expand the quest tracker, like with a small button in the upper corner.
In dungeons I really don't want to see the long list of quests, and the tracker also seem to stay on top of every bar/window that pops up in the same location.

yes!, this is certainly a worthy addition, sometimes you just have the need to hide the tracker :p,

and a simple +/- in the right-hand corner of the tracker like the Retail version would be more then sufficient ^^

Thanks, that does help a bit.
But really looking forward to next release where I can hide the whole list in dungeons/raids :)

Yeah, the next release will be a big one! Just released v5.3.0 so we can unhide the PvP quests.

ae4f80d adds collapsing/expanding buttons to each quest. Not the hole tracker yet (time was very limited for the upcoming release), but will be included in the next release!