At least it's 'only' a few pronouns - it may sound awkward now, but not so awkward that it couldn't become acceptable in a timespan of decades or less. Compare

At least it's 'only' a few pronouns - it may sound awkward now, but not so awkward that it couldn't become acceptable in a timespan of decades or less. Compare to the many languages that assign a gender to every noun, where you'd have to make up a whole new set of endings or something. (Of course, there are also plenty of languages with no grammatical role for gender whatsoever.)