[buovjaga]

There is no "possible switch to ribbon interface". No matter how the new toolbar interface turns out, it will not replace the sidebar.

[ultramancool]

I hate that ribbon interface. LibreOffice seems to really hit the mark for UI for me. I guess it really depends what you need, but the only time I've found LO lacking was with filtering a massive spreadsheet (which really should have been in a DB anyways).