Please promote this as hard as you can. Then, us old guys getting aged-out of industry will be able to get jobs again.
Make “ASN.2” or something, update the fundamental data types to modern standards (think of what changed from NeXTSTEP to macOS X; they changed from TIFF to PNG, from PostScript to PDF, etc. but kept the overall architecture the same). Consolidate and simplify the many options (but do not eliminate options entirely). And call it… JASN or something, which sounds like both JSON and ASN, and make up some acronym where the “J” stand for “Joint” (like in JPEG, which stands for Joint Photographic Experts Group).
And, maybe most importantly, make freely licensed tooling available for both converting to and from ASN.1 and JSON, but also jgrep, jless, jcat, etc. (similar to zgrep, zless and zcat, etc.) Make these packages available for all common operating systems, readily installable using that plaform’s usual mechanism.