I don't think that manipulating this ranking has any value for anyone. Its just fun game for users. I didn't said that CMC is trying to guess. I said that CMC community tries to guess. So far top1 (Paraguay) seems to be the most likely scenario.
Paraguay just took one huge step back:
https://decrypt.co/75887/leaked-draft-bill-shows-whats-inside-paraguay-bitcoin-lawBesides, even the creator of the bill said he doesn't push for it as a legal tender:
I was only pushing a bill to regulate cryptocurrencies for the daily use and adoption and not trying to make it a legal tender,
Probably the big countries like Russia, USA or China because they have the influence and the population to really make a big difference in the market whether it's good or bad, it doesn't matter.
Those probably will be the last, I can see even the Vatican adopting Bitcoin before China. Be real, a country that relies heavily on manipulating the exchange rate of its currency to give that up and play by the rules? Do you think they would want to destroy their economy...for what?
For example Marshall Islands were eyeing cryptocurrencies in the past (although not Bitcoin) or Malta ("Blockchain Island") now has Euro, but they can very well make a further step forward.
That Blockchain Island just got raided by pirates

It went downhill from
last April:
At the end of April, however, as regulations swept the Maltese nation, 70% of the crypto companies in the sector had not yet sought licensing. Meanwhile, 26 crypto companies applied but none of the firms were approved.