Well, the Atathualpa theme has served me well since I first migrated my blog to WordPress from Slashcode (yeah, crazy). However we live in a new world now, with a growing majority of web traffic coming from mobile devices. It's time I got with the times and used a responsive design theme. So I've made a switch to the TwentyFifteen theme. I'm going minimalist for now, and will likely bring modifications back in as I see value.