A months long jump would actually seem to make sense. Several years ahead the "Litverse present" would probably just serve to disrupt the story.
I'd really hate a jump forward for VOY. For once I'd really love to see the consequences of events. I'd like to see Janeway dealing with what happened to her and the rest of the crew adjusting to her return. Not to mention that VOY right now's the only series in the 24th century that isn't dealing with the Typhon Pact - since I haven't read any of those books so far, that matters quite a great deal to me.