One of the good things about power lists was that you were able to create a pretty non varying list and reference it with various outreaches. For example, you could have a power list with all Admins of a product so you can send release notes to them. This was simple because all you had to do was select the power list and you're done, no power list config required.
Bionic queries are definitely the way to go but the setup can take long even for a simple list.
Is it on the roadmap to save AO queries in a similar fashion?