Come to think of it, is there any technical limitation on having comments submitted as stories? Maybe it's just a cultural issue (i.e., there is no culture of submitting comments as stories here).
A genuine technical limitation is that poll options don't work like other items ('item' is what the code calls posts like stories, comments, and job ads), which caused some trouble last week.
I think a community process for surfacing the best stuff—not by upvoting, but by e.g. nominating one best thing each per day—could yield interesting results.
1. Filter out anything below 5 upvotes instantly.
2. Merge comments of duplicate OP's into one super-post.
3. Provide Vivisimo-like tech to auto-categorize and search those. Nice picture of what that looked like in document below.
https://faculty.ist.psu.edu/jjansen/academic/pubs/vivisimo_j...
I imagine HN comments would have a ton of tags generated by such an approach. So, a straight-forward search engine for them could help too. Not a Big Data guy so I can't do recommendations. However, this DARPA-funded, Watson alternative was open-sourced and might do interesting things for HN data: