[axlt2002]

Since information of rating, votes and Top 250 are in the same movie description page, it has no sense to scrape for just one of such information. Update only Top 250 will take the same time as updating ratings and votes too. 

 I guess, what he really was asking for, is a single option to just scan the TOP 250 movies from the IMDB site, and compare those found movies (their tt.. numbers) with the movies in his own database and then update them accordingly (of course with the ratings as you wrote), so he has an state of the art Top250 in Kodi.  

This is what I had in mind, and also perhaps an option to export a list of missing TOP 250 movies to a txt file?? 

Sorry, but may be I'm really missing the added value of such an option. What is going to bring more than what the addon is already doing?

Anyway I could consider it in a next major release of the addon (i.e. passage to python 3 for the next releases of Kodi). Sorry but at the moment I'm busy with another project. For the time being I will correct just bugs or add very basics features, if needed.