Just like the dev I am also really curious which big bagholder is selling lately. I can imagine though why he is selling. The crypto landscape keeps on changing and changing. Every month we have a new feature. The new coins get bought/hyped and the older got dumped. Just as in any other upcoming business, improvements go quickly. Eventually every likes to invest in a coin that has a good chance to be a longterm survivor.
I think NobleCoin has to make a plan how to become a longterm survivor. what ingredients does a coin  have to have to survive.
Not being very technical this is a difficult question for me.
let me try to make a list of needed ingredients to survive.
1. thrustworthy.
2. active dev.
3. active community.
4. active marketing.
5. all premium technical options.

Most interesting point imo is point 5.
Like Rofo explained recently it's every month a new hot feature. But to become a longtermwinner a coin has to implement the new features that are really important. Looking at the graphs of LTC, NMC, DOGE etc is shows us NOT 1 coin did already make it to longtermwinner ( also BTC didn't succeed to this level).
Now I am trying to go into the technical part of a coin and I good easily talk nonsense, please correct me.
Isn't it our best option to stay with 1 NobleCoin ( contrary to Rofo's last plan) that is updated everytime we see a new feature that is a must to implement.
Talking for myself, I think POS and anonymity ( did I spell that right?) are 2 important subjects. I think Rofo's last plan by making a POS-Noble, a blabla-Noble, eventually will lead to hopefully at least 1 Noble that is appreciated and all the others will be thrown away.
I think, Rofo has a very good longterm vision and a bright mind. He must be able to refrain from many Nobles and just make 1 TOP-Noble that is updated a lot. I can imagime this will lead to many hardforks, but I think there is no other solution.