Love this extension - progress and completeness to date.

It is solely responsible for switch back to ffox after drop-kick of ffox-57 lost 2 must-have extensions - tab-group and session-manager.

With SimpleTabGroup(2.3)
A bit disconcerting to have lost history on tabs when switch back to a group after switching away
- have to see if thats workable or can wait till mozilla's blocking api bugs fixed.

Good job on the tabs in groups grid layout - hope some more devt goes into this to have smaller group boxes/collapsed contents
so can see all groups on one page and can drag groups more directly to reorder groups more easily.
Good that can reorder groups on selection popup

(The popup list of Groups for selection to change to (edit, delete) is currently workable for smaller numbers of groups but miss the full page (grid) display for when have a lot of them - maybe its just a change I need to get used to

perhaps default icon for a group could be the mini webicon for the first Tab in it ???
- save individualy soecifying the icon for each group

Kudos to all involved in the effort made and progress so far..... ab-so-lutely f* Fabulous extn.