Quoted from markmon:GB code is not early and will not be majorly different a year from now. A couple tiny big fixes is all you can expect. Game was touted as released finished. GB can be fully judged right now in its current state. This is basically how it shall be.
That's been my main concern (well, playfield issues too) with Ghostbusters. The code with Ghostbusters has a bit of a generic vibe to it at times and lacks personality in my opinion. The toys on the premium could be coded more to increase their use / potential but I don't see Stern doing that.
I think that Stern is now trying to release games more "code complete" upon release but as a result the games are lacking the personality and depth found in many of their past games. Code support and code that actually adds depth and uniqueness (rather then just bug fixes) to games on a regular basis (not 6+ months) is more important then ever when dropping $5k-$10k on a NIB purchase.