Or maybe where a fraction of the tip goes to SN? LIke 10% or something? E.g., if I tip a post or comment with 51 sats, the first 1 goes to SN as currently, then 10% of the remaining gives SN another 5. The content that I tipped gets 45 sats.
At SN's nascent phase, content (posts and comments) are too scarce yet. I wouldn't think raising the barrier(s) makes sense yet.