I think it wouldn't be a stretch to see at least their non-pro computers using an A-series chip eventually. I'm sure there's at least an internal build of Mac OS for Arm machines right?
Given their affinity for AMD graphics, I wonder if a desktop A-series processor could have a built in Vega GPU like the Intel chips? The i7-8809G has a Vega with 24 compute units which should be decent for light video or photo work. Notebook Check doesn't have much by way of directly comparable info for the Vega M GH and the A12X Bionic's GPU.
I really like Blink Shell, Charles Proxy, and Pythonista. One nice thing about Pythonista is that you can trigger scripts from Shortcuts (neé Workflow) which has come in handy for hacky workarounds.
Haven might not be in the main F-droid repo(?), but you can add theirs to install it. It’s also on the google play store and the source is available to build it yourself.