I’d love a “4 Invincible Dragons” style of boss, where we would fight Pandoras apex predators, a massive radiated Skag (Shin-Skagzilla), a corrosive Rakk-Hive and a gigantig electric Spiderant, all mini raid bosses.
First we start out fighting them 1 on 1 and after loosing half their HP/Armor/Shield they would tag out. Once the last one had lost half of their health, all 3 of them would come in and bombard us with attacks until we can kill them. The order in which to fight them should be: Rakk-Hive, Spiderant, Skag (basically from slowest to fastest).
Obviously they and all enemies in that fight should be immune to their own element. The raids should have attacks like these…
Rakk-Hive: Spawns dozens of little Rakks that hunt us down if we don’t shoot them. Those Rakk swarms could be non-elemental, have 1 random element or have Rakks of all the elements and once the Rakks start dive-bombing they would leave small, damaging elemental pools behind that stay for 5-10 seconds. The Hive itself could also charge at us, which would obviously have to be telepraphed by it screaming or something like that. Once it stops charging forward it emits a corrosive nova.
Spiderant: It charges at us regularly and every 30 seconds it morphes into the opposite gender (from am Emperor to am Empress and vice versa, starting out as Empress). The Emperor is faster and more aggressive while the Empress spawns all variants of Spiderants that are in the game, except for other Empress’s. Also, once killed the bigger Spiderants explode into 2 smaller ones. In the first half of her health bar up to 5 smaller Spiderants could be spawned at once while later it only spawns 2 (the little hatchlings that come from killing the spawns do not count towards that limit).
Skag: It is just a physical attacker, but leaves a trail of radiation whereever it goes. That trail lasts for 5 seconds. It can also spit radioactive balls at us that explode if they don’t hit us directly, but start a DoT if they do. The radioactive ball itself isn’t massively damaging, but the DoT becomes more troublesome the more you’re under pressure. Shin-Skagzilla starts the fight with 4 other elemental badass skags, which aren’t too healthy, but very aggressive and are meant to be killed before phase 2 of the raid or else you end up having up to 10 enemies against you at once (3 raids, 2 Spiderant spawns, 1 Rakk swarm, 4 elemental badass skags), 14 if you count in 4 hatchlings.
The general idea is to have a chaotic brawl with nature that escalates massively during phase 2 and leads to some sort of damage race. For that reason the raids don’t need massive HP, but should rather have short-lasting immunity phases every 25% of their health. During those phases (~5 seconds max) the raids, except for Shin-Skagzilla would also spawn new enemies, if their limit of additional spawns wasn’t reached already.