White-list poling certainly could be performed in a political manner even if it isn't necessarily the case at the moment.
I would argue that GRC investors don't need to be involved in white-list polls since coins are minted at a predictable rate regardless of how they are distributed (please correct me if i'm wrong here).
It's only the miners who should be directly concerned with the fair distribution of mining rewards and the inclusion of projects that they are contributing to.
Of course changing to a purely magnitude based poll for white-list voting still allows for political influence within the mining community but at least then the voting share is directly proportional to the amount of mining contribution rather than financial investment in the currency.
Automating the process of project inclusion would remove the need for voting and ease the threat of project exclusion for ideological reasons so it would be a good feature to aim for.