The only problem with Titanic is that the only people who use it extensively are the Titanic enthusiasts themselves and I honestly think that even though VSTEP is getting a lot of grief for the ship not being included in SSE, I actually think they're getting less complaints about the ship not being here then they were getting complaints about the accuracy of the model, dynamics, etc back in the days of SS06 & 08. I remember at one point there were multiple posts a day relating to the ship 'not being cool because it didn't sink like in real life' etc..
Don't get me wrong, I'm a Titanic enthusiast myself but a lot of them but don't see that the game is SHIP simulator, not Titanic simulator. I believe this is why the ship isn't in the game now, in addition to some complications with the ship's modeler if I remember correctly. I think VSTEP took a sigh of relief.