I wonder if activity feed failure is due to channel points. It seems to hang every time there is a redemption.
The resizing issues I have with it are somewhat covered as well by FGSquared's comment. The elements resize to fit the space but not intuitively and additionally it doesnt seem to support scrolling? If I, for instance, have 6 items (3across, 2 high) and shrink the full browser to half height, it jams every widget into that space versus hitting a minimum size and then scrolling.
My use case for it is (again as FG mentioned) at-a-glance stuff. It is the only place I can see channel point redemptions (when chat gets moving they get lost fast otherwise). The other stuff requires me to dive out of the game to engage with (like ad breaks) but I dont need to have that stuff jammed in the window. So scrolling down to it would be fine (as with the current dashboard).
If, based on your comment, most people pop out the elements they need, would there be a way to have a custom URL that just has those elements we want in a window? Like dahsboard?activity/chat/stats with the same simple snap-to UI.
Regardless, I think the overall look and feel is great. The functionality and usage is just not quite there yet. I really appreciate you taking the time to lay that all out!