I've been trying to persevere thru several games but nothing I've found even remotely compares to CoH.
I've soloed a half dozen characters of various ATs thru Neverwinter, but it becomes so repetitive.
I gave Champions Online another try with several different character types, but I get tired of playing the game since I don't bother paying to open the damn lockboxes, and teaming is pretty much non-existent.
I've tried Star Trek Online, but have no real intention of studying for the equivalent of an Engineering Degree in order to maximize my ship's options. (But to be honest, my 35 year-old son loves the game.)
On a high note, Perfect Word International has come nice character customization options, and the Ranger and Cleric classes are played by Flying Elves (which makes a big difference in getting around quickly and avoiding large groups of hostiles.) The background is based around a Far Eastern Mythology, which makes it something quite different from your average Tolkeinesque rip-off.
Strategy-wise, my games of choice are Civilization (IV because I was too busy to give it much attention while I was playing CoH, and V because it's quite different from the others in the franchise, and the CoH-based mod is fun to play with.)
I've also enjoyed some of the sci-fi style 4X strategy games such as Sins of A Solar Empire - Rebellion, AI War, and The Sword of the Stars series of games.
Flight sim wise (and I've been dealing Death from Above since the mid-80s) I've been studying some of Eagle Dynamics combat sims, such as Lock-On Modern Air Combat, and their interlocked DCS World simulator. These can all be played at any level of complexity you prefer, from an arcade version thru a quasi-military training level with lots of bells, whistles and tons of functional buttons to push.
I still activate Icon occasionally, to make new costumes / uniforms as well as to visit the old haunts and hideouts, especially after having spent most of Saturday night checking out the CoH videos on YouTube when a real-life friend and CoH partner came over, and we both reminisced about locations as they popped up on the TV (I was using my Roku box new YouTube function to check them out), we had a friendly griping session about how much we'd both love to get back to Paragon City if the opportunity ever presented itself.
I have to give Samuraiko 4 Stars for the great job she's done in showing off some of her team's experiences in the game, as well as expressing her emotions concerning it's loss via her excellent video work. Great work, Michelle!