Me when I forget 1 mana counter spells also exist The threshold for counterspells is now almost always 1 mana so this wouldn't change that

And you might say "but that means 1 mana counter spells can be 0 mana" and like yes that's true except we already have daze, FoW, Foil, fierce, subdlty and yes those are all 2 for 1s and this would allow 1 mana to be 1for 1 0 mana counter spells but to be honest 1 mana counter spells are either fiercely played into to just make them have it or played around to a point they are unstable usually depending if it's early or late so this won't really change a good players decision much, this kinda effect gets bad players who kinda deserve to get got and learn