So one thing I'm curious about is the art of Rebel farming - that is, instead of running before they reach you, just fighting through the Rebel fleet after you've explored as much of a sector as you possibly can and exiting only when you need to or when the whole place is dead.
I've noticed that the fleet's ships count under the Ships Defeated stat and boost your score rather significantly - some of my highest scores are runs where I had no scrap recovery arms or pre-igniters or anything fancy but where my build was strong and I just fought my way back to the exit from wherever I was because I felt that I could (and, I could). But I haven't yet explicitly turned around and aggressively lashed out at the fleet. I suppose I might try it, just to see how high I can get a score for it and because of the badass feel of not running and just desolating the pursuing bastards.

So here's some things I've observed about the fleet so far:
- It seems to be composed entirely of Elite Fighters. I haven't seen any sort of Elite Riggers or AI ships in it at all. I don't know for sure though.
- In nebula sectors it seems to generate ion storms. Once I got a "reveal the whole map" reward from a random battle in a nebula sector, and all the beacons that had been overtaken by the main fleet showed ion storm hazards.
- You don't ever gain missiles or drone parts or scrap from victories, just 1 fuel, so if you keep winning you'll at least never run out of fuel. Also, there are no advantages for crew kills over hull destruction.
So while I suppose most people who have them would use the Unidentified ships for farming, simply because they're powerful and not heavily dependent on consumables, the ship I intend to try it with is the Zoltan B (Noether). With a maxed cloak and either heavier armament or Stealth Weapons and an experienced crew I think it could take the Elite Fighters on in the later sectors. The Fighters don't have a drone control room, so the Zoltan Shield won't be immediately invalidated by drone fire, and the Fighters instead often seem to use long-charge weapons like Breach Missiles or Burst Laser Mk IIIs. So the Z-B's standard cloak-shield-cloak tactic I think could work for a very consumable-independent kill strat (not needing missiles/bombs or drones much) that is relatively well defended against missiles and boarders. At least, with some luck to acquire additional weapons to bolster its already strong starting set and hopefully Stealth Weapons to keep firing through the cloak. And in case of ion storms, well, at least a partially Zoltan-powered ship is less affected, and helped by the fact that your normal shields can just be kept off or on a low setting as long as your Z-shield is up.
I might also try a Mantis B (Basilisk) boarding-oriented farming tactic just to see if that's as viable or better than the melting-Rebel-scum-with-energy-weapons approach.
What do you guys think? What ship would you prefer if you had to fight back and not run?