Seems like it would dilute things more, yeah. Also, the rate of new videos is kind of slow these days, seems like it wouldn't be the best time to split things up more, at least right now.
If you're hiring more creators, to have, like, EEVBlog-sponsored, influenced, spin-off, whatever channels, that would be a good idea though. Like VSauce / VSauce2 / VSauce3, that have individual creators and styles.
Tim