Proof of Stake coins have many issues here are some:
PoS is not backed by anything other than the belief there are worth anything and there will be an endless supply of PoS coins because one created today does not have a significant advantage over on created tomorrow, next week, next month.......
not true at all, nxt
How about you go into detail how you would carry out your 51% attack scenario on nxt? I'm quite certain its not possible.
With a PoS the richer get richer. Nothing more to add to it that's just how it is.
Yes i agree that sucks. Same in PoW tho. Mining is in the hands of a few prefessionals these days and unless you have a significant amount of money to invest into mining hardware you don't stand a chance on competing.
If you invested that money into a PoS coin you would be a rich staker. Same story different name.