I think 5e should have tried harder to implement the rules of 3.5.

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I get that some people care how close the game mimics 5e rules, but I just don't care. I really don't. To me, an action is an action and a bonus is a bonus, and whatever, let's have fun. Drink a potion of speed? Great, that's two actions, make 'em spells if ya want. Or don't, they're your actions, not mine.

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Personally, I wish the game would start every character off with one feat that they get to pick. Something other than a stat boost, one of the other feats, like mobility or dual wielder or whatever. It would make the characters a lot more interesting at conception, and I care way more about that than I do staying true to core rules as written.