Tabs are used when viewing new content
The RM and XFMG use them
3rd party addons also use them
With RM 1.2 and XFMG 1.1, some tabs have been replaced by sort options
The sort options dont fit in with the rich use of tabs throughout XF and 3rd party addons. Furthermore, the sort options are not as mobile friendly as the tabs.
Please re-consider bringing back the tabs in the RM and XFMG.