[adun79]

A couple of bugs:

- scraping actors from IMDb (only tried with TV shows) doesn't scrape the role

Not see this, scraped actors and roles for episodes of Arrow.

- "rescrape episode" does rescrape the episode, but it deletes it from MC database

Also not seeing this, which scraper are you using? XBMC TVDb, MC TVDB (API V1 or V2)  

I just used the rescrape wizard on Forever (2014) , The Flash and Arrow with series actors from IMBd and the "role" fields in the nfo are empty. It also happened when I first added a series some while ago.

For the second one, I'm using MC TVDB v2. Right after rescrape, the only thing that you will notice is that the total number of episode in the library goes down by 1. The episode will still be in the list, but it will be gone after you restart MC.

Another suggestion, but it's probably complicated: skip scraping the series actors when scraping episode actors from IMBd. I don't know which would be easier: check with the list of series actors as it scrapes and skip if it's on the list, or scrape and then eliminate those on the list. In the second case, it will probably need that option of different number of actors for series and episodes.