Pretty much no new campaign until now is planning to do this. In the list few campaigns are running for +1 year. The vast majority run for 2-4 weeks then it will close or pause without resuming.
Too bad. I would prefer a set and forget campaign type. Which campaigns are running since a longer time already and have no enddate as of now?
No one would know when a specified campaign will stop, sometimes even the manager doesn't
In the closed one : crypto-games/news/FortuneJack/nitrogensport/yobit (some of it opens new slots when someone is kicked or left)
In the open one 777/bitvest
And there is those 2 campaigns which could accept special members : coinroll (old one, ask yahoo if you want to apply/he is not the actual manager*) and ChipMixer (not that old but well managed and seems will run for a long term)