Give us a way to look for fonts on specific features!

For example: I needed a sans serif font for headers in a book, where the capital i doesn't look like a small L. Or I could use a K with the right center angle. Or an M that doen't touch 'ground' in the center.
Features like that, it is really hard to search nowadays. We used to have font-books, but now everything is online and this is one of the hardest things in my job, takes a LOT of time. 
Letters that are important for various reasons in characteristics (all of them but mostly): 
ABDEFGHIKMNOQRSWY

Please help