we have this embedded in the "recommended" order, which is the default one given on the first search results. It's an algorithm which considers a few paramaters

we have this embedded in the "recommended" order, which is the default one given on the first search results. It's an algorithm which considers a few paramaters and gives points. These points are reduced according to the number of hours which have passed since the last calendar update. So Owners already have the incentive. Your idea could be interesting anyway. We may allow to order by "last updated calendar". Thanks for the comment!