Mining is called forging with NXT.
It is advertised that transparent forging is one of the key factors and differentiators of NXT.
I tried to understand the algorithm behind that forging mechanism. I did not find anything (except looking into the decompiled code).
IMHO: NXT concept of forging does not follow the approach of 'fairness'; it generates GODS and GIANTS. The more NXT you have the more NXT you will receive. This approach does not support the concept behind NEM.
A much more flexible and less chunk building algorithm has to be developed/defined.
Any suggestions / ideas?