There are forums which deal with videos, and ones where people lists sale information. Both have a numeric measurement to them - duration and price.
It would be useful if a tag can be set to contain a numeric value, and one can filter / sort topics based on it.
For example, for a site listing videos, a #duration tag can be attached with a value in minutes. One can then use parameters such as tags:duration=>10 to search for topics containing videos longer than 10 minutes.
Some range-filter sliders can probably be set in advanced search to help users utilize the feature.
It is not my place to comment what happens in discourse-dev, but this feature request has two likes and no votes after two years
I would take another route, not perfect, but it might do the job. Using something like #duration-10+ (no, I don’t know if + is allowed in tags, but anyway).