Basically a real translation require a conscious machine or at least one closely resembling it.
Translating some common words would at least tell me which toots might be interesting enough to manually feed to a state of the art translator.
I agree that perfect translation might require GAI, but don't let perfect be the enemy of good. An AI just needs to be better than existing approaches to be somewhat useful.
I'd be down for Big G. I'd expect some kind of plugin either user-side (I choose) or server-side (the instance chooses), though.