Antilles --
I am a long-time veteran of free-form Star Trek RPGing, having played for nine years in various sims before "retiring" to get some real writing done.
I wrote in TNG-era, near-future and next-next gen sims.
I must say that I've found a few significant problems with sims I've played in:
1) Fanboi interference. Too many sims have had at least one fanboi gearhead who starts fiddling with Treknology to make it super powerful. Superships that could take on a fleet of Borg ships at once, armed with uber dimensional torpedoes and gravitic weapons, and defended by impenetrable shielding.
2) Infiltration of other sci-fi genres. You can make an argument for the Kzin (since they appeared in an episode of TAS), but every other non-Trek race, ship and occupation needs to stay out of Trek. I like my Trek to just be Trek.
3) Death of the Federation, Federation on the Brink, etc. Trek, to me, has always been about hope, about a better future. Call me a TOS purist, but I prefer a Federation that, even while it still must engage in war on occasion, has a strong foundation of species working together, even if they don't always get along.
4) Too far forward. This is just a personal preference, but I think there's plenty of space, even in the 2260s, for a group to sim in. There's no need to jump 25-50 years in the future of TNG/DS9/VOY to have a good Star Trek sim.
Aside from that, I like the fact that you are using an actual RPG system to help guide the gameplay within the sim. I wish you luck.
Davy Jones
"Frightened? My dear, you are looking at a man who has laughed in the face of death, sneered at doom, and chuckled at catastrophe! I was petrified."
-- The Wizard of Oz