I think there should be a total of 250/400 votes when we reach the target a random legendary spawns in a biome someone is in but only 1 of course. would make people vote i know i would. just a nice idear, tell me what you guys think!?
There should definitely be a voting system with rewards. I don't think, however, a legend spawning is the right reward. Legends would have already spawned in the span of 0 to 400 votes so it's sort of too common. Maybe a special voting crate to all those online when the vote meter was reached would be nice, I was in a server that used that. Or maybe a drop party that dropped pixelmon items like rare candies, ranch upgrades, scrolls and stuff.
Something similar to this has been suggested in the past and Dys said that he may consider it. Also I like vynnqor's idea where everyone online receives a special crate key once a specific amount of votes has been reached since that would add another method of obtaining crate keys.