I think this is great for:
a) people who are visually impaired or have issues with their hands/fingers
b) people who aren't programmers; if you could make it more Scratch-like then this is amazing tool for showing off power of programming
It's never going to be over. All the easy interesting problems were solved years ago. Now you have to work really hard to come up with something technology related that hasn't been done before.
it also has notepad++ at 30.5% - I've seen one or two people who would use notepad++ when nothing else is available, but I don't think many people have it as their primary IDE.
Also, if you sum up all the JetBrains products (which you can get as IntelliJ Ultimate if you shell out the money), you land in the vicinity of 63% (not vim-related but a neat fact)
Plus rodents survive in hiding. If they come back up to the surface to seek food, then they will become targets of owls, foxes, etc. But Thule they live in the sewers, that gives them protection.
You might find some weird hack in codebase that isn't obvious what it does at the first glance. This isn't something that people document in official documentation but even finding a JIRA ticket that is linked with that specific commit can help tremendously.
There is a great plugin for browsers called 'news feed eradicator'. It's great because it turns facebook into messenger with notification center when somebody mentions you or there is event coming up.