WOW.
a. i love the idea
b. imho, at later stages build an option for several n-bagholders to collaborate by putting their drk into one wallet [several signatures required etc.] in order to qualify and benefit from the masternode economics.
c. i think you just invented to Proof-of-Stake that makes sense, bcs all the POS that i've seen so far are contradictory to 'spending' money, whereas this method works for those who want to spend/ do transactions AND those who want a 'dividend' on their long-term investment/holding.

i really love it!!!!!
way to go!

p.s. i haven't read all the following posts and responses, so if anyone wrote this before me - i'm with you.