I wouldn't recommend you to keep a team full of only a single weapon-type character. The reason is that all the weapons in the game are unique and fulfill a niche situation requirement for you. Suppose, if you are facing an enemy who can summon a Geo construct, then using a bow character in front of it would be useless. Every weapon has its own specialty and features passives and secondary stats that can help to bring a synergy to your team. I always use a mix of characters that can wield a bow, swords, catalyst, or other weapon types, depending on my team requirements and team rotation. For example, you need overall good energy recharge for all characters in the team. Feel free to use the Favonius weapon series on different weapon-type characters. By using that combination, your characters may have 100 % ultimate uptime.