While an upgraded steel, sheath, and standard scales would be awesome I think that it really goes against the design intent of the Becker series.
I feel that the whole idea was to produce a line of affordable, well made knives that can be easily sharpened and will last a lifetime. Every addition we knife enthusiasts make to “upgrade” them moves farther away from that core ideal. Yes, the sheaths suck, but it keeps the overall costs down and they work for the average buyer. I really don’t see them moving away from 1095 in general either. Firstly they are tied to Kabar and that’s the most available steel they use so branching off probably wouldn’t be cost effective (unless it was a sprint run). Second, take a look at the video ESEE put out when they first started producing the S35VN models where they broke an ESEE-4. Not that 1095 is impervious to breaking but it was tried and true in the design and it seemed they only moved to S35VN due to consumer pressure, not because it was something they wanted as a company.
I think the best the enthusiast market could hope for is a limited run, maybe yearly, of 3V steel and micarta handled versions of the BK-2, 7, and 9. Although I think D2 would be more likely since it’s a steel also used by Kabar.