With ability score modifiers it's also important to look at the way ability scores are generated.
If you roll it's much more about the roll itself than where the +2 and +1 go. Any race can still have 16 to 18 in any ability score. With rolling, I would probably keep the racial modifiers. Rolling generates the kind of freedom that the proposed change is now bringing to point buy.
The Point buy method is a more balanced way that works better for video games, especially multiplayer and potential PvP. We all know how well "rolling" translates to a video game in the original BG games and how it's not really rolling anymore. In point buy, the racial +2/+1 modifiers become much more pronounced. Without the +1 you can't have a 16 in your main stat and you're always behind races that do. You also have to pay more for the stats without racial bonuses, which translates to having a lower ability score total. It's just a sucky feeling trying to create a strength based High Elf Eldritch Knight who is wise and perceptive with point buy, when the game is forcefully telling you to play a finesse version with wisdom no higher than 13. So with Point Buy, I would prefer the ability score modifers to be unlocked.
I would also experiment with removing the double costs from point buy. 14 and 15 only costing 1 point would help unlocking new builds and role playing options.
