I'm still of the opinion that there could be improved code in existance, it's just that it's never been released.
Reasoning: BDK is sitting at v2.94. Hardly a "round number", or a number I'd pick for a "final version". This is good, because I doubt Lyman considers BDK finished either. But remember that some months after v2.94 was released, the Costco BDK Classic came out... with v3.00 software.
Now, one can imagine that the reason BDK saw improvement in the first place was because Lyman was tasked with modifying the software for use with the Lite version (and I don't doubt that he wasn't tasked with nearly enough time to do it all "on the job"). And, one can also imagine that the reason the Classic software is sitting at v3.00 versus v1.00 or something, is because it's a modification of the base BDK code (like Stern's current Pro/LE software versions). And, if Lyman saw fit to number the Classic version at a nice round v3.00... then perhaps it's more polished than v2.94 was, and perhaps - just perhaps - there's also Pro v3.00 code sitting trapped on someone's hard drive...