Can you fill the questionnaire?

Sure.
Recommended Confirmation Time:64 sec block time * 10 recommended confirmations = 640 seconds
Worst Case for Confirmation TimeObviously infinity, as with every other coin, if no blocks are produced. Average time for first confirmation is 0.7298 minutes. [1]
Transaction LoadIn average 301 per hour. [1]
Anonymous TransactionsWon't happen on protocol level.
Transaction Fee Costs0.001 BLK per kB.
Network Security Costs1% of expected market cap over a one year time period.
Share SupplyYou probably mean coin supply: 74748558.43040356
Share Divisibility (precision)Divisibility: 10^-8
Coin features: Yes/No/In Development/Planned:
Profit SharingYes [2]
Order MatchingIn Development [4]
User Registered Accounts / MessagingSame technology (you should also mention voting, since you list everything your NXT client can do). In Development [2].
Cross-Chain Trading SupportIn Development [3/4]
[1]
https://bitinfocharts.com/blackcoin/[2]
https://github.com/doetsch/blackshares[3]
http://blackhalo.info/[4]
http://nighttrader.org/Side note: I am respecting the NXT community very much, but I have the feeling the intention of your questionnaire wasn't a very noble one. But I can be wrong and also you don't speak for the whole community I suppose.