Well I played every edition of D&D up to 3x, then went to Pathfinder, and now using Starfinder. I really like Starfinder. While Starfinder is derived from Pathfinder, it really isn't the same game - there are still feats and spells, but significantly less of each than Pathfinder. However character classes are completely different - now you have Theme (which provides specific skill bonuses, plus a modifier to one stat), Class which is similar to PF classes, but different too. Races including new and legacy have fewer racial bonuses/penalties, Archetypes are a completely different animal than Pathfinder archetypes. The system is more attuned to point buy rather than rolling your stats, and maximum stat at 1st level is 18. So the days of having a 30 STR is not even legal in Starfinder, the max stat is 22. Its far more streamlined than Pathfinder. So in some ways it's similar to PF, and others it's completely different. I really like the Starship rules, if you hand-wave the fact that there is no 3D combat, that all starships fly on single map grid (hexes), and hex size is determined by the size of each ship, so currently it's difficult to have a Tiny fighter and Gargantuan ship in a fight because hex size doesn't match.
I will be publishing two products for Starfinder as 3PP very soon (doing page layout now) - Dead in Space is a series of one-shot space horror modules by T. H. Gulliver, and Starships, Stations and Salvage Guide by Ed Moyer expands SF starship rules, with a couple options to replace existing SF Core rules (cargo bay sizes and tonnage, allowing Large ships to have shuttle now - now only Gargantuan plus can have shuttles). We're adding 21 new starship frames, 47 new expansion bay options, dozens of system upgrades for armor, computer, AI, defenses, etc. Included is 21 new deck plans (corresponding to the new frames), as well as rules for Space Stations, and Salvage rules. Probably a week or two on release of both.
