for me....it was 1st 2.0 F2P, then killin off having Hybrids on skill tree (hybrids imp op agents were just nasty 8)), no new classes (would love to play a stormtrooper, or an SIS agent), taking away my "right hand of jadas" title, getting mail and in chat spam for cheap creds every 20 sec.....and most of all khelm
the good...storylines most were good like the agent, inq (poor khelm and zash) , merc and smuggler . did some classes story 2 to 3 times. the *** and OMG when a storyline catches u off guard. if ur willing to put in the time, u didn't need raids to get top end gear. the "special snowflake" title.... thermal detonators to hutt's (or other forms of watching them die)....jaesa, kaliyo (most agent companions were good, vector can just die), mako, guss and vetta..agent class....lana and same sex romances in later expansions.