I definetly know the feeling XD
I like to think that I follow great people with interesting projects, on the cusp of delivering it - keeps on my toes. Focus and don't give up!
Been working now two game engines: one for 8-bit and 16-bit machines and one for 16-bit and 32-bit ones (one evolution of the one used in this game). Each run on various degrees of "good" on both Amigas old school Macintoshes, depending on the configuration. But I do not want to simply retread my steps, but rather ship a really good RPG, that pushes the old machines to some new direction.
Sometimes I feel that targeting those old machines end up getting me stuck, but that's the only target that I feel would make the game relevant :(