I’d like to re-ignite this discussion in light of the arrival of delegation.
These two ideas are interesting. They’re not necessarily mutually exclusive, either. We could blend them in a balance mechanism. Maintaining a stance on a proposal gives you Conviction continually (or streams it), but continual failure to speak on a new proposal streams Decay from that proposal to you.
If your Decay outweighs your Conviction, your Conviction is no longer counted. Voting FOR or AGAINST a proposal you’re getting Decay from will stop the stream of Decay and start streaming Conviction. How much Conviction and Decay you get could be a function of your voting weight.