In my Maranan Cluster campaign, we've developed an FTL mode called the "Collapsar Jump." It's an outgrowth of gravitic science. The functional concept is simple.

[technobabble]

Instead of all that Lhyd forming a bubble around the ship, and being lased to provide the energy pulse that opens a rift into j-space, we use just enough Lhyd to supercool our lanthanum grid, while the rest of it goes into a meta-critical fusion reaction. The energy released in this reaction gets dumped into the gravitic generators (j-drive), which forms an intense gravity field around the ship via the lanthanum grid.

Since the ship is inside the field, it is not crushed. Instead, n-space warps around the ship, which drops into its own little 'pocket' universe. However, this pocket is asymmetrical. The asymmetry is pre-determined before jump, and controlled through the collapsar process, so as to arrive at the proper destination. Wherever the ship is between points A and B, it is not j-space, but somewhere else.

[/technobabble]

- Fuel consumption is the same.

- Chances for misjump and jump failure are the same.

- Travel time is the same.

- Cost is the same.

For every jump past overhaul, there is a cumulative 1% per parsec chance of ending up in a different probability ("parallel universe"). This means that if it takes two three-parsec jumps to get to the shipyard after the due date, then there is a 3% chance after the first jump, 6% after the second jump, and 9% after the third jump to end up in a universe where (for example) the First Empire fell to a Soviet-run Earth, and Galanglic sounds more like "Galaruss."

Dosvedanya, Komrade!