My proto-language has a dorsal R, which is probably closer to /ʕ/ and in any case is a rip-off of *h₂. This gets lost pretty much everywhere but word-initially and after a consonant. I also have /d/ > /z/ > /ɹ/ intervocalically (/d/ > /z/ in other environments, but elsewhere it's just lost.) This gives me /ɹ ʁ/, but I only have one rhotic in my orthography (and I want it that way.) Should I merge the two, or keep them separate but with identical writing? I admittedly could change one to a different sound, but I'd really like to have a rhotic in both of those environments.