The reason we are choosing to do both at the same time is to help human users a little bit against bots. A reservation with linear rewards is that bots will self vote their maximal voting power and humans will continue to use the site as they have and potentially not use all of their voting power. In this scenario bots will get rewarded at a faster rate then their stake. We want human users to be able to use their voting power a little quicker to help curb that effect. We gave a range of values from a small bump to a large bump and appreciate all conversations discussing the merits of those changes.
RE: Proposing Steem Equality 0.19.0 as the Next Fork