Let's gather PoS related ideas which were proposed so far:
1. [voephilis] Use PoS parameters which were considered in Oct. Interest rate starts at 100% then is being lowered several times until it reaches 1%.
https://bitcointalksearch.org/topic/m.90969422. [Boreiv, kresuk] Use same PoS parameters which Rofo considered recently with interest rate 5-10%
3. [fairglu] Switch to PoS without using an exchange.
4. [kresuk] Use swap rate of 5:1 or 10:1 e.g. for 5/10 current coins people get 1 new "pos" coin.
5. [voephilisI] Joe, the dev of Coin Magi is willing to help. His message: "I can experiment the hybrid PoW/PoS like XMG, but it's also fine with the pure PoS; I strongly recommend XMG's PoS-II, it's more safe compared to the implementation of PoS 2.0 by blackcoin and much more network activities triggered by PoS-II comparing with the PoSV of REDD as it advertised. Feel free to let me know what I can do."
Here's my $.02 on each:
[1] Looks good to me. We are already close to 2 billions coins so the 100% interest rate would be working just at the very beginning. This could work by attracting people to stake just after the switch and at least some of them will continue to do so even with lower interest rate. Also bear in mind that interest rate is not the only PoS parameter available. We could also cap max reward per block.
[2] I think 5% is too low. 10% is OK. The problem may be to find people interested in keeping their wallets open all the time which is important since this is how the network is secured in PoS.
[3] This is interesting because we can do the switch without relying on external parties. Also decide freely what swap rate to choose and so on. However if we follow this route there will be two noblecoins in existence. So in fact we will still need to talk with exchanges either to de-list the old noblecoin or ask them to add new noblecoin-pos.
[4] The idea of having less coins is to push the price higher hoping that with swap rate 10:1 price also goes 10 times higher e.g. to 70 SAT now. However there is risk people who are not actively looking at Noble will treat increase in price as pump and in the end price may end up lower than 10 times higher. So in the end market cap of Noble may go down.
[5] This is most revolutionary idea. Switch to new version of PoS potentially avoiding some pitfalls related to the well known PoS which is used by many coins. This sounds good. However by choosing this path we change drastically Noblecoin's image. What I mean by this is Rofo chose 'stable yet boring route' and this attracted all of us here. This is what usually people in traditional finance like. To have something you can rely on even if it produces lower returns. I am not sure if making such a bold move would be good long term. There is much higher risk that hard fork will be needed if serious issues are found in the new PoS code. Short term it should be good as it is always easier to advertise bold moves in crypto world.
Please share your thoughts. At this point I do not like [4] but would like to further discuss remaining points.