There have been a lot of suggested changes to the JDrive over the
years, mostly to Make It Cheaper (where Making Fuel Take Less Space is
included in Making It Cheaper). I'm not proposing to do that. Here's
what I'm proposing:

The JDrive doesn't actually take you anywhere. What it does is flip
you into "un-space", where you can have an effective FTL velocity. The
actual velocity is provided by operating the MDrive in un-space.

Proposed Rules: The "jump number" specifies how long the ship can be
held in un-space. That is, if the drive is rated for J2 in that hull,
it can hold the ship in un-space for two weeks. In the proposed
design, there are no jump governors; it costs as much to flip the ship
into un-space for one week as it does for three, provided that your
JDrive is rated for J3 in that hull.

So now you've flipped into un-space, and are just sitting there. Then,
you push the button on the MDrive. And you start going. Your MDrive
rating, in addition to defining your space acceleration, defines how
far you can go in un-space, in parsecs-per-week. Your M2 drive takes
you two parsecs in un-space in a week. If you have a J2 drive and stay
in un-space for two weeks, that M2 drive will get you four parsecs.

All other rules are more-or-less the same.

Now, The Question: What are the political and economic ramifications
of this drive vs. the standard drive?

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