What is the block time? How long should it take between blocks? is it like an average or is it pretty regular? (besides the weird ones)
The block time is not regular, this is the reason for the discussion on the re targeting algorithm. Currently I am not sure what they average but it was around 5. ideally these coins could adjust per change in the N factor so the whole block time is predictable. Although I am not sure if the time is evening out over the long run but I believe it is