Something that gives me a lot of hope for this game is that it's been built on the Age of Conan engine.
The engine was buggy when first used, but now it's had three and a half years of live development and testing. The result is that Age of Conan both looks better and runs smoother than The Old Republic. I get massive memory leaks in TOR, but none in AoC.
On top of that, The Secret World's graphics are a bit more stylised and less intensive than Conan's, so it shouldn't be as demanding.
So I'm hoping for a relatively painless first play experience. There will be bugs, but using a mature engine with a lot of dev experience behind it gives the game a significant advantage. They can focus on getting the systems right, rather than with Conan a huge part of the early struggle was getting the engine to work.
And then there's the whole customer loyalty part. I've subbed to AoC since the start, and unlike many others, don't hate the game - it provided me with thousands of hours of enjoyment.