I bet they drop by Deep Space Nine in the first episode or two as they leave Earth. It would give a good chance to meet a few characters from various different series and get caught up with what they're all doing now, without having to introduce them as full fledged characters.
Cisko - Likely an Admiral by now
Jake - a famous writer
Chief O'Brien and Keiko - Both teaching at Academy
Janeway - Likely an Admiral by now
Riker - Likely Captain of Enterpirse, possibly an Admiral
Doctor Bashir - Frontier Medicine somewhere in back of beyond, still chasing Ezri
Quark - Still running the bar
Nog - Now a Commander, running DS9
Worf - Head of the Clingon Council
Ducat - Supporting Romulan resistance
Tom Paris - Commander under Captain Harry Kim
Tuvok - Head of Star Fleet Security
and the list goes on
It's fun to speculate 
Cisko - Likely an Admiral by now
Jake - a famous writer
Chief O'Brien and Keiko - Both teaching at Academy
Janeway - Likely an Admiral by now
Riker - Likely Captain of Enterpirse, possibly an Admiral
Doctor Bashir - Frontier Medicine somewhere in back of beyond, still chasing Ezri
Quark - Still running the bar
Nog - Now a Commander, running DS9
Worf - Head of the Clingon Council
Ducat - Supporting Romulan resistance
Tom Paris - Commander under Captain Harry Kim
Tuvok - Head of Star Fleet Security
and the list goes on

