Twitch integration: Option to disable thumbnails

I would like an option to disable the thumbnails/previews that replace the channel logo of the entities. They are so small that I can’t see what is going on on them and I would like to show my entities without names, just channel logo’s but when there is a thumbnail you can’t see what channel it is.
I think this would best be done by adding a configuration variable “show_previews” or something similar that is true by default.