Can't comment about system profiles because I don't use them myself, but..
- an interface called "App Ops" hidden deep in the settings will allow you to control permissions in a way that is similar to LOS' app management features (but not their privacy guard without a separate app)
-the navigation bar can be highly customized with new/moved/changed buttons, and also a gesture-based method is available
- in general, this ROM is super stable, very few bugs, and nice battery life
- it also has nearly all the features I liked from LOS 14.1 plus some extras, and is way more customizable than LOS 15.1. But I haven't tried LOS 15.1 since early this year, so I'm sure it's improved
Thanks so much for your reply! Sounds all good then! Perhaps someone else can elaborate on how to temporarily disable the lockscreen with this rom.