The more rules that gets removed the less flavour the game will have. It's not just advantages that makes roleplaying games fun, it's also the disadvantages. It's about choices with consequences. Soon, races will have no meaning other than different skins..
Changing the way ability scores are assigned is not removing rules - it's removing a limitation. The ability to make meaningful choices hinges on having a set of options with balanced advantages and disadvantages. There is literally zero advantage to taking a race that doesn't let you start with at least a 16 in your primary ability over one that does. Removing this limitation will increase the amount of meaningful choices to be made, not decrease it. I say that with confidence because there's other roleplaying systems out there that are crystal clear proof of it.
Its not about making meaningful choices, it's about making though choices. You are not supposed to get an advantage you are supposed to trade something useful agianst a flavour you want. You want to be halfling barbarian? Sure go ahead, but it will be an upphill battle.
And as people already pointed out. Just roll your stats and allocate them wherever you feel like it.
