I can't repeat it enough: the full Director's* Cut HAS been restored last year in Koch Media's Steekbook and Amaray re-releases:
https://www.amazon.de/Punisher-Steelboo ... 01FX3POCM/https://www.amazon.de/Punisher-Uncut-Bl ... 01N5HBRR8/*(Mark Goldblatt's Director's Cut being the Uncut version, not to be confused with the extended workprint versions)

What was stopping it before was that Fox (new worldwide owner of the rights) would only make and provide a HD master of the R-rated cut (even if they had the material which I don't think they did). Goldblatt's personal print is now handled by the Academy archives, but Koch Media found by chance a vintage 35mm uncut print dating from the French theatrical release so they scanned it in 2K and restored it into the other HD master... It's pretty flawless.
I wouldn't expect work on a 4K remaster though (unfortunately), but I should also say that koch Media's release is the only one in proper Stereo Surround sound and not a fake 2.0 or 5.1 made from a mono source on other releases.