Originally Posted by
Yukichi
Himes are the base on which to build. They are the foundation. A weapon grid is useless without a sound, battle-worthy team. Unless you feel satisfied with a team, there is no need to go out of your way for raid SR weapons of its element.
You will definitely level-up or max limit break most SSR weapons that you get for every element. They usually give you more attack power than SRs without having to skill level them. As such, you only need 9 SSR weapons of any element as a base for all grids. Thereafter, the off-element ones can be replaced by same-element SRs and SSRs you get from Advents, Raid Events and Union Events without having to farm, and that are generally better than Disaster raid ones. It's best to get and develop weapons you are sure you won't replace.
Having multiple teams will be beneficial later on if you want to challenge the more difficult content like guild order, tower events, accessory quests and ragnarok raids. You will be better equip to fight and have an easier time against more elements thus improving your results, as well as your union's standings in Union Events. You'll also have a greater variety and breadth of play. Being water main means a more difficult time with fire content as it is your weak point. Light and dark teams are slightly better suited for all events.
The wild card here is the 100% eidolons. Owning one means dealing as much damage as having elemental advantage against every element. If a lot of friends have the same one, you may count on often having 2 which means dealing more damage than having elemental advantage and a 100% eido. However, in both cases, the exception remains fighting the opposite element. Also, you will still receive more damage than having a team with elemental advantage. Having a good team to go with it remains essential.
Ultimately, the number of teams you have will depend on which himes you get and on how much time you want to dedicate developing teams. As you grow, you will see all the possibilities the game has to offer. You'll become fully aware of what you can do, see what brings you enjoyment and decide what is right for you.