Assuming that video is correct, players don't like to change difficulty settings. On my own observation, some players (myself included) won't join a party just because the difficulty isn't at the preferred one. ("I'll get that many more crowns if I play on Elite rather than Normal, so I feel like I'm losing out if I help you beat the Jelly King unless you play Elite too.")
The video points out that, in Dark Souls II, players can basically set their own difficulty. Spiral Knights already allows you to do this. Want to ace all the levels without a scratch? Get Chaos, Brandishes, and Pulsars. Want to raise the difficulty? Get a DVS/WHB and Shard Bombs. (Trust me, DVS is not a weapon for the faint of heart. My short supply of sparks proves that.)
With this in mind, I wonder if this is why the devs are so insistent on keeping certain weapons bad and other ones really good. This is also why I suggest that weapons get their mechanics changed while in Lockdown, because that's where balance comes into play, in order to keep things fresh.
Very interesting. A few thoughts/observations:
1 - SK sort of gives the same advantage with teamwork. Enemies get stronger with more people, yes, but their health isn't doubled/tripled, it only takes one or two extra hits to take down most enemies with teammates.
2 - Ranged fighters (in SK's case, Gunners) shouldn't have the OP advantage like spellcasters do in Souls, because there are many Gunners out there who still want a challenge and wouldn't be happy if the game suddenly got easy for them. I do think that some weapons like Winmillion and other lines need buffs, but there should be some weaponry (not just swords, also guns and bombs) and gear that is made intentionally underpowered to make it harder for those who want a challenge (WHB, Fearless Rigadoon, Shard Bombs), and some that is made intentionally better for those who want to make the game easier (Chaos Set, Brandishes, basically every boss weapon except Gran Faust, and The Third Troika if it ever gets released), and also some middle-ground equipment for those who want a more balanced difficulty (Wolver Line, Gunslinger Line, Sudaruska/Triglav, Final Flourish, Alchemers).