With the latest update seemingly showing that Klei's kind of running low on great ideas (possibly, who knows really, it might just be in prep for something bigger and better), here's one small boon I thought that could be cool in the real game:
Grasshoppers would spawn from Grass tufts during Summer and despawn at them when dusk approaches, kind of like Butterflies do. They would be as small as bees and would jump around like frogs, with their jumping rate increasing when a player approaches them. A way to kill them/obtain them would be to either catch them with a bug net, which would also require team work, since they run away from you very quickly. Ranged weapons would not work on them and in case of the boomerang you would just have the boomerang fly off or something. When you catch about 12 of them, you would be able to craft this thing:
It would require 12 Grasshoppers or their legs as items dropped from them upon death. The suit itself would have 30% protection from physical attacks (because it's not really covering your whole body, as it's just a giant spring, held up by smaller springs), increase your movement speed by 10% and would have 750 durability. The suit's feature would be to spring away enemies that hit you 1 - 2 tiles away from you, which could be useful for beating a bunch of opponents which are ganging up on you (especially useful for clearing out spiders or the full moon event). This is also made to incentivise staying in the overworld during Summer. While I strongly would like Dragonfly to also become a Summer giant again, even if she only stays at her arena the entire time, this could be a good start in the right direction for Summer. Plus, it makes sense, since grasshoppers are most commonly present during Summer time.