I’m generally in favor of these changes. I would also recommend encouraging comments at the earlier stages of a proposal, as that’s when they are most valuable. Pushing comments at the Tally stage just for rewards feels like overkill if you’ve already shared your stance, unless the proposal has actually changed. To keep it simple, I would do 1 comment per proposal, and see if it also helps delegates to share their stance this way 1 comment is 10% 2 times and removing the fricction of writing a comment for the 10% sake.
I think rewarding everyone who is eligible to vote and use the rationale as an incentive its relevant here. Even if some people just follow or copy delegates they trust, they are still making their vote public, so there is a reputation at stake that helps keep things balanced.
Regarding the implementation, I don’t think we need a full proposal for these changes. They are relatively small and uncontroversial, and since OpCo was assigned to manage the program, we should give them the autonomy to shape it. I am a bit surprised by how much pricier RAD is compared to DIP(DIP was paying contributions aswell), but overall I like the pay-by-proposal mechanism, it helps us understand delegate costs and see exactly when the delegates are needed and provide most value.