Option to make a "default" area for Automatic thumbnails on particular websites

It would save us a lot of time if we could:

- Click to make a manual Thumbnail 

- Choose Size and Position 

- Set that size and position as default for that website (Store wide for AliExpress, 

another default for Amazon and so on...) 

Desired result when using Automatic: 

Every time I make thumbnail from a site where I have made a default, 

like AliExpress, it would take a snapshot for the thumb, using the size 

and position I have used to create the default for AliExpress. 

Current problem: 

Many stores, like AliExpress, have large "headlines", so when adding a 

dial, I cannot see the product, since it only takes a snapshot of the headline.  

I then have to delete that and make a dial manually.

Hope this was clear.. 

Cheers :)