Writing for LWN

I like to write articles for LWN.net from time to time. Recently I wrong about the recently announced “f2fs” file system (https://lwn.net/Articles/518988/) and might follow it up with a couple more reviews of other filesystems.
One challenge is thinking of – or finding – interesting things to write about. I’m not expecting my loyal readership to do my work for me and provide topics, and any suggestions about general areas of interest that might spark some idea for me would not be unwelcome….