At today's difficulty level, mining Ethereum to a donation pool would result in 1 reward per day for every 400 1070Ti. In our team meeting today, we decided that this was insufficient. Of course, it's profitable - but miners like to see consistent rewards to that they know everything is set up properly.

With the above in mind, we are looking at moving away from the choice of Ethereum for the donation pool. We'll update the community in due course.