tl;dr but...
i recall the question being asked previously, and it was ascertained that there was no total agreement, however the majority seemed to react towards leaving the algo as is.
I'm still of a mind that pure POW is the best way to go, but find myself more open to the argument of a slight change towards a minimal POS and for that reason, I've voted the second option in your poll. I'd be willing to listen to any proposed change, but i'd reserve the right to make up my mind at a later date for the reason that since bitcoin is still only in 'phase 2' of mining with 25BTC blocks, it may be a good idea to implement some form of POS (?), but just, not yet.
This is a rational comment I can agree with. I already have a list of concerns with the complicated and yet to be named TaPoS-like design Vitalik has proposed but I am not going to delude myself into thinking Bitcoin is perfect either. Bitcoin has a lot of maturing to do which possibly can happen organically and naturally without any hardforks but we should be open to doing what is right for the ecosystem and supporting these fundamental principles:
1) Bitcoin is defined with 21 million units
2) Demurrage is prohibited
3) Rules which increase centralization are prohibited
4) Any changes which destroy fungibility (I.E..blacklists) are prohibited
5) Any changes which destroy the Pseudonymity of Bitcoin is prohibited
Besides 100% PoW does anybody have suggestions as to the intrinsic properties which define bitcoin that should not be changed?
P.S... Additionally, I think its foolhardy that any change can be incorporated that isn't a hybrid like compromise to appease the vested interests in the PoW mining space. To assume that bitcoin could change to 100% DPoS, TaPoS, PoS, PoI , or anything that doesn't involve PoW is a very unrealistic proposal.