Some tools and guides within Logos provide thumbnail images and some do not. I find that the ones that provide them to be helpful, and I would be interested in seeing this expanded and implemented more consistently. Some examples:
This first screenshot was taken from the Exegetical Guide. It lists the grammars that have a hit for the verse I was looking at, and it provides a thumbnail image for each grammar.

This second screenshot was taken from Factbook. To keep the image smaller I did not expand all the sections. What is interesting here is that some results provide a thumbnail image and some do not. The portions that are not expanded in the screenshot do not produce a thumbnail image if I click the arrow and expand them.

The third and final screenshot I will include is from the Passage Guide. There are no thumbnail images at all. Given the amount of commentaries many Logos users have, this is one section in particular that could probably benefit from having images added. My commentary list is much longer than what is shown below, and I do not always remember which commentary is from which set based on the information currently provided. For example, the eighth entry listed (if I am counting correctly) simply says "The Pastoral Epistles." Just by looking at that, I have no idea who wrote that commentary or what set it belongs to. A thumbnail image and description will appear if I move my mouse over it, but I would not need to do that if a thumbnail image were already available.

As always, I am grateful for all the hard work Faithlife has put into making such an excellent product, and I am appreciative that its employees are open to feedback from users.