I don't get why people in that mason reddit thread are saying ranked rd would be super balanced compared to AP because you wouldn't be able to pick fotm/bullshit/op (pick your term preference) heroes.
While yeah RD limits those picks, it also limits your options for countering a hero it appears in the pool.
So many times you have an awful pool for a specific lane and randomness doesn't mean you wont see specific heroes. Heck, for a while Storm appeared in 90% of my RD matches.
The only thing that bothers me tbh is Meepo. That hero has a higher winrate than lone druid so it isn't even a micro issue. Its not like the hero requires another hero to enable himself like wisp. Hero has 40% wr by himself sigh.
Same thing with Alch
The best mode hon had was a ranked rd (banning draft). Something like that would be perfect for ranked with the highest mmr player on each side gets to ban 2 heroes each. I'm all about that RD though--best mode by far and it's the mode me and my RL friends used to play 6-8 years ago back in dota1 at the LAN cafe (so lots of nostalgia).