My points are pretty clear,. (...) Nxt was launched just 2 months after IPO and 25% of people never came back to claim their coins. Given much longer delay, this number could be even higher, but lets assume it's 25%

Why do you think 10% plus all the BTC isn't enough for future development? Nxt started with 21 BTC and unclaimed nxt equaled to 10 million ( which is only 1% of total nxt) .