Hi @Fabius I see the suggestion. However, in my opinion, the romans' relatively simple unit roster is important. Civs should have different strengths and weaknesses, and part of that is having an incomplete roster. Depending on how unit balance evolves going forward, there may be a need for the romans to get a different ranged unit, but for now I don't think they need it. I worry that adding extra units creates kind of a situation like mace currently, where they are very good at a lot of different strategies.
If the range is really crucial, using bolts is a good choice.