I am thinking that group initiative every round might be rather swingy.
That could be good, or bad.
It was pretty swingy, and I liked 3e's cyclical initiative better. But I know there's fans of round-by-round initiative; the system did have a few benefits.
I think it existed to help balance magic vs non-magic. Powerful spells often took a long time to cast (relative to the speed of a weapon) ... but still allowed the spell to be cast within a round. Some spells (eg Power Word X) used casting time as a balancing technique; they were
faster than other insta-cripple/death spells, hence the higher level as an additional balancing technique.
However non-combat actions didn't have "weapon/casting" speeds, and I don't feel like looking up the speed of an unarmed strike again. (That latter part speaks more of 2e's poorly-organized corebooks, perhaps, than a case against weapon speed by itself.)
They are magical languages.
"Granting" magic where it's unwarranted is a bit of a battleground.
In this case, magical alignment language become a shibboleth. You could guess someone's alignment by asking them a question in your alignment language, and if they don't answer fast enough... Poor chaotic but good-hearted fellow, being told to swear an oath in court. In Lawful. You could decide if you think someone is trustworthy by asking them a single question. If they refuse or clearly don't understand your question, then they're not trustworthy.
People have used techniques like this in real life in massacres and warfare. I think it's too easy to tell someone's alignment in D&D already, now anyone could do it.