I have never seen an MMO that's ready to go on day 1. This either happens due to high expectations or a better product on the market. I wouldn't buy an MMO on day 1, but that's not to say that others shouldn't if they feel confident in supporting the development team. However, I find a problem with buying a piece of software that is flawed or incomplete.

As for STO ... I loved CoH, but the main developers of the game stayed with NCSoft and formed a new studio, Paragon. Therefore, Cryptic really has to rebuild their brand and I wouldn't consider CO a very good start. Maybe STO will turn out better. The previews look awesome, but you never really know until you get to play the closed or open beta.