I think this is a fun idea, definetly brings player more together at minigames and also gives them more challenges.
I've seen this on other servers too, and it seems to work for loads of them.
I don't think this is necessary.
It's a RSPS so it doesn't take too long to get the elite void. 2 hours at max on a day without the bonuses activated.
I do not support this suggestion, although there might be some changes when it comes to pest control rewards, to make it more interesting and will be way more active then it is nowadays.