1) Problem: Looking at the walls of text intimidates me as a user.
2) Problem: Their is so much content (most of which the text takes) that the scroll is too long. This could further intimidate the user in leaving the website. Users don't necessarily want a lot of choices but relevant choices.
1) Solution: Maybe try only showing the first paragraph and then having a show More button, which when clicked opens up the the whole description.
2) Problem: You already solved the problem with a navigation in the beginning. One problem though is that I did not even pay attention to it and just skipped to where the drones were. So I would like to have it stand out more so I know there is a directory to help limit my search. Bring more emphasis to that piece of the website. maybe place it in the traditional location? (Navbar)
Also, if i am looking at everything and suddenly make up my mind that i want to look at a certain category I would prefer for there to be a navbar on top to quickly jump to that section. i don't feel like scrolling for a long time to get to the top to then get redirected.
Hope the feedback helps.