Currently the Featured course toggle is binary, the ability to set a timeframe during which the course is featured would ensure the course is featured during the appropriate time frame without the need to manually set and disable this function
Thank you very much for bringing this functionality to our attention and by showing your enthusiasm through voting! We have implemented this feature, it can be found in the Catalog Visibility section of the Course add/edit forms.
I've evaluated this with the development team and we're excited to implement it in the LMS. 2021 is quite full, but we'll look to do this in 2022.
Thank you all for this great idea! Paul Gheran, product manager for the Admin Experience, and I discussed this and he is evaluating doing this in a way that will not require any changes to your Learner Experience templates; therefore, he will comment once his evaluation is completed.