From a development standpoint, I can safely say (or predict) that no time will be spent making the e1k or e2k spectrum analyzer any better… those ships have sailed. For those older radios we don’t even use the SA anymore, and typically just use ACS to get a feel for what’s going on in the band.
For the e3k and upcoming e4k… there’s slight hope that there may be SA improvements… but frankly, I’m of the opinion that built in SA’s are more of a bonus feature designed for quick and dirty troubleshooting and I don’t expect it to ever replace a real spectrum analyzer.
I do agree, it would be great to see the features you mention added, but after waiting for even the most basic features, like AP preferred retry timer, to be implemented, I don’t hold much hope for advanced SA features.