I have my main and a couple of alts on Grand Master Zym which can be empty at times the most people I have ever seen at one time in past weeks is 70 players in Imperial Fleet and never more than 20 players on most planets. So, for the most part I just don't do Flashpoints or heroic quests. Back when I bought the game a couple weeks after release I could always find a group for heroics and flashpoints, please implement character transfer or merge some of the dead servers together.