Could have sworn the argument used to be that it wouldn't be a valid hardfork unless there was a super-majority. Now that it might happen, a super-majority is a bad thing because it suits you?
No, the argument is still that a valid hardfork requires a super majority of all users of Bitcoin (meaning miners, businesses, and users), in fact, it requires consensus. A super majority of miners is not enough; miners do not and cannot dictate what Bitcoin is. You need a super majority of everyone involved in Bitcoin.
I'm aware that it's not just miners who make the decision and there has to be both support from non-mining nodes and economic support from users and third party services. The real point is, if a fork happens, we'll get to find out for certain where that super-majority lies, rather than than putting the cart before the horse and just assuming based on your own personal preference about which chain each of you happen to like best. It's largely speculation until we see the actual usage in real time. You can't prevent the open market from doing its thing here in Cryptoland, and there's undeniably a gap in the market attempting to fill itself if these forks are occurring. Assign the blame for that where you will, whether it's crying foul of "miner cartels", or "benevolent dictators" developing alternative clients, but there's no stopping it. Plus, everyone can finally stop bitching about the miners having too much influence if they're going to head off and do their own thing. People should be happy about all this, but I suspect no one actually will be because it's all about teh dramas
(sic)
Full nodes dictate what bitcoin is.
LOL NOPE. No one group does. That's the whole point. No one dictates anything. Everyone does what's best for their own selfish interests and consensus, together with the free market, sorts it all out. Create the right alignment of incentives and everyone works together voluntarily, don't create the right alignment of incentives and people fork off.
I believe the thread was hijacked by the Segwit2x vs. Core topic. They are still good to read though, but please answer my original question first.
IF Core decided that a Proof of Work change is needed, what kind of mining algorithm will they use in your opinion? Will they develop something new, or will they use something that is used now like Scrypt?
Technically, the developers don't even have to settle on a single algorithm. It's possible to use more than one. I'm pretty sure there's an altcoin out there utilising 6 at once. This also apparently helps with ASIC resistance due to the extra math involved. Certainly something to consider. If the goal is ASIC resistance, maybe leave Scrypt well alone.