Can you take a look at much newer solutions: snowblossom (proof of iops of storage with large snow fields &nyzo (proof of diversity) both written from scratch in JAVA, both are working now:
quick intro of the 2 projects online:
Snowblossom https://fx-c.com/cryptocurrencies-that-will-change-the-world/#Snowblossom_SNOW
nyzo https://fx-c.com/cryptocurrencies-that-will-change-the-world/#NYZO

I think they may solve some of the problems, but they are too new tho, newer than most other projects. and almost no one is talking about them now.

I hope you can join their discord to talk with the developers of above projects. They are active on discord.