Re: FTL Jumps and making it tricky...

>>How do you protect a system? Can you have some sort of
early warning
>>system that will tell you someone is in FTL travel X hours
away?

As described in the Tuffleyverse, no.  You are at Point A,
then, with no measurable transition time, you are at point
B.
If you use another universe, eg Honor Harrington, then FTL
travel takes time and I suppose you could do this.

>>If not, what about placing interdictor ships like used in
StarWars that
>>will generate a Gravity well to drag a ship suddenly out
of FTL on likely
>>avenues of approach to a system and warn you of their
impending approach.

Might as well put a few black holes out there, let the
incomings hit a steep gravity gradient and shred themselves.
That way you watch your detection system kill the enemy,
while you lay back and sip your banana daiquiri.

My solution was to have Jump Points, with the recognition
that the "point" is a fairly big volume and wanders around a
bit.  Put a battle station there and it will at least
observe an enemy arriving, but it may be too far away to do
anything about it unless the station is mobile (or has
fighters).