Although the starting date of the ICO is still a long way, but the bounty campaign already been started.
I think that took a bit too long for the bounty campaign to last for about 4 months.
I am the BM of Rubius and you do have a good point. The campaign started having in mind a schedule of ~1 month, only then the ICO was pushed backwards. I was forced to dilute it until the end of July and only the Media and Twitter campaigns are currently active, thus no resources are lost by advertising a very-distant pre-ICO. As soon as the pre-ico lingers around, a new airdrop stage will happen and the marketing will go back to full-throttle once again.