"Star Trek: Renaissance"
I'd like to see Worf temporarily reassigned (in the hopes of Starfleet Command, that he'll stay on permanently,) to the Enterprise-E under Captain Morgan Bateson (Kelsey Grammar).
Worf, of course, still doubting the significance of his part in Starfleet & being manipulated by forces on Quo'nos & occasional visits by Q that "they're using you".
Considering everything Picard's been through since his experience as Locutus, ramming the Scimitar & the decision to fire on the allied ship in the Trek Lit ("A Time To..." mini series) at Rashanar, Starfleet Command decides to momentarily bench Picard until Command is 100% assured Jean-Luc isn't slowly losing his mind & becoming too much of a Kirk-like "cowboy diplomat".
But, in the meantime, there are those seeking to access The (TOS-Era) Guardian of Forever for malevolent ends, sending our heroes once more into the breach. (Kelsey) Bateson saddled with a Klingon X.O., his own formerly X.O. Gabriel Bush struggling with alcoholism and given the Captaincy of the U.S.S. Bozeman-A (Saber-Class).
Tempted by the possibility of going "home" to his own time, dealing a permanent blow to Kozara, altering the causality loop that sent him here...all he has to do is step through The Guardian but realizing the potential butterfly effect to Starfleet and the Federation...