The problem is that (1) I am a minimalist and dislike lots of "features" and (2) I prefer extremely simple HTML that targets the links browser. Most users are probably using graphical, Javascript- and CSS-enabled browsers so while this may work great for me, it may be of little interest to others who have higher aesthetic expectations. Another problem is I prefer to write tiny shell scripts and small programs in C that can be used in such scripts. To be interesting to a wider audience, I would likely have to be re-write this in some popular language I do not care for.
If I see people on HN complain about how few results they get from search engines, then that could provide some motivation to publish. I am just not sure this is a problem for others besides me.
Many results I get from search engines are garbage. By creating a metaSERP with a much higher number of results overall, from a variety of sources, I believe I get a higher number of quality ones.