Since my first map might take a while to be finished (a few years at least), I developed TDMDB in the meantime, a database application that allows to more easily view and filter all available missions, simplifying the process of finding missions that are suited to one's taste.
You can just go ahead and check it out here: tdmdb.com/missions. It's on a very limited shared server, so don't expect blazing speeds, although loading times appear to be reasonable enough.
You can use the application to, for example, find all city missions that are also part of a series, and have them sorted by size. Or all independent missions that have undead and spiders. Or missions by a specific author that have EFX Reverb support. And so on.
Or you can just scroll down through all missions, reading about them and looking at their pictures.
All of the information was retrieved from the wiki and thedarkmod.com by a couple of scripts, and stored in a database.
The application may be installed as an official TDM resource, which was my original idea and motivation (more on this thread). For this purpose, you may find the full source code and installation instructions on this GitHub repo. The data retrieval process might change if this becomes an official resource, but that can actually be a good thing, since scraping the wiki and thedarkmod.com is not ideal long-term.
In any case, for the time being, the application can be fully used on tdmdb.com. Hopefully it helps many find the missions of their dreams! (it did help me find some amazing series).
By the way, if this is breaking any rules, just let me know. Also, please feel free to tell me if you find any bugs, missing data, or if you have any suggestions on how to make the application better