Right now, the endgame crises are pretty easy apart from the scourge, which makes them the most annoying of the bunch because they are the red-headed step-child. Firstly, the crises need to be made much harder. The Scourge is fine for the time being, but unbidden and robots need a stronger starting navy. Second, crises need to be either a quick but exciting blow-out of a fight or a methodical series of attacks that whittle their forces down.
The reason I suggest the blow-out is if the crisis spawns in the player's system. They're kind of screwed if the crisis can't be taken out quickly. There needs to be a way for us to tell the galaxy "Hey, these guys are gonna kill us and you'll be next. Send your navy over and we'll try and level them together." There could be a lot of approaches to this, but if a nation is pretty big it should have enough influence to call for that level of assault. It would be pretty exciting too for the intensity and scale of the battle.
When the crises attack smaller nations that wouldn't be able to call for this, it should be what the devs are already calling out for i.e. a slow methodical assault. To that end, I don't think they're doing it quite right at this point. The unbidden is the best example: they get ships faster with more dimensional anchors. In my mind, it should be the opposite effect: they get reinforcements slower the more spread out they are. As a compromise, they should have a significant combat boost in their own space (hence wanting to spread out). This would mean the galaxy would have to whittle the Unbidden down until they have very little space left.
The reason I suggest the blow-out is if the crisis spawns in the player's system. They're kind of screwed if the crisis can't be taken out quickly. There needs to be a way for us to tell the galaxy "Hey, these guys are gonna kill us and you'll be next. Send your navy over and we'll try and level them together." There could be a lot of approaches to this, but if a nation is pretty big it should have enough influence to call for that level of assault. It would be pretty exciting too for the intensity and scale of the battle.
When the crises attack smaller nations that wouldn't be able to call for this, it should be what the devs are already calling out for i.e. a slow methodical assault. To that end, I don't think they're doing it quite right at this point. The unbidden is the best example: they get ships faster with more dimensional anchors. In my mind, it should be the opposite effect: they get reinforcements slower the more spread out they are. As a compromise, they should have a significant combat boost in their own space (hence wanting to spread out). This would mean the galaxy would have to whittle the Unbidden down until they have very little space left.