Oh yeah, I can honestly see that. I do wonder if Aura would have to be reworked a bit to account for Rage in that scenario, then again, we already have several characters who can kill ridicolously early if the pieces fall together. So that might actually work.
While Dr Mario feels like a wasted opportunity (now that he's returned twice) I'm not entirely sure he needs a total makeover. In Smash 6 they could change how Pill / Cape works and a couple other aspects.
The Google Doc in question (which uses the methodology).
I do agree that it's Ganondorf's general design that's the problem here - he doesn't need to have a sluggish neutral, terrible disadvantage and horrible recovery rolled into one for all that power he has. Either throw combos (what he had in Melee) or maybe even if they're riskier giving him his float. Make his recovery a bit better but more technical so it isn't easy to pull off.
IIRC Bowser Jr.'s in a weird position. A couple pros rank him in the middle-of-the-pack, but there are also three pros that see him still as Bottom 10. The problem he has is that he lacks out of shield stuff and is susceptible to gimps. He could use some buffs, but I'm not sure where. His frame data maybe?
A lot of Swedes (especially in the tech sector, like Bergensten) learn English to a fluent degree nowadays - it's the second language from as early as 4th grade. And many kids do get exposed to American media (incl. video games) alike the rest of the EU. Subs are also prevalent since unlike the bigger EU countries (France, Germany), there's not as much incentive to dub stuff - animated / child-friendly films are dubbed and that's kinda that. Swedish is spoken here as well as a minority in Finland... and that's pretty much it. There's a much larger audience that speak French / German / Italian / Spanish.
I don't think Mojang's Swedish employees would be much of a hindrance.