Not if a few members would help. If all work will go to a single person, yea maintaining it would be difficult considering that we all have irl issues, but if it's divided then it'll surely ease the burden. A good example would be Mitchell's Overview of Bitcointalk Signature-Ad Campaigns [Last update: 24-Apr-2018]. The others will suggest what changes should be done then one user will compile them into the table and lastly OP will check it and update the first post.

Great post though, I too have wanted something like this for quite some time now. But the column's are too close on each other, maybe you can put some space between them?