[quote=@Isotope]
Well, I don't really have a preference on type but like I said I'd suggest the gravity well rule to preempt ftl asteroids and missiles appearing inside your atmosphere/shields.  As an aesthetic matter maybe warp or hyperdrive over wormholes, blink drives, or other instant transit.  FTL taking time and there being a navigation component fits better imo.
[/quote]

Since this has a fantasy element, may I suggest we have at least two forms of FTL: one perhaps inspired by SW with Imperial-regulated hyperlanes and ofc secret hyperlanes and 'back alley' ways of evading Imp control. The other could be something closer to Dune or 40K, using the Void to travel? I like the idea of 'hell-cutters' or the Sorcerer's Path going thru some eerie dimension.