The last MMO I was serious about was COH. I downloaded this game in April, 2014. I was blown away, the voice acting, the setting, the art etc. Underneath is your basic MMO shell which reminds me heavily of WOW/EQ but with more abilities to use in regular combat. And contrary to some of the EJs here the complexity does require higher skill even without watching for random procs.
Things I like:
Easy to solo and rewarding to solo. I enjoy the voice acting and scenes. There is so much to see and do. I find myself roleplaying nearly by accident. Love it. Skillful play is rewarded. There is a significant difference between spamming buttons and careful play in this game. Well constructed mob difficulty in most cases. Basically anyone can solo their quests yet there are rewarding useful challenges for those with higher skill and gear. The setting and classes are well done. The story lines are great Not everything is buried behind an instance. There are world bosses and datacrons and other fun things to find in the open world pretty standard chat options. I could use the chat system immediately upon logging in because it is bog standard. Reasonable but not over the top UI editing. Not every MMO can support WOWs level of customability as it affects balance. I can modify the UI enough that it doesn't cripple me. High replayability. Effectively 16 unique class quest lines (4 AC, light/dark, republic/imperial) Companion quests. Each spec feels very different within an AC. this is good to prevent boredom and ragequits The gear system. I like that I can get a look and keep it as I level. Yet I can also add to that look if I get orange/purple gear I want to swith over too. Conversely I don't love the dye system, it needs something more. Being able to add dyes to my collections might fix it.