This is a very complex question. The Arch people were to NOT able to get a decent Qubes template even though they CAN kick Qubes developer ass blinded and one hand tied behind their backs. Arch has the best software people and documentation. Did I kiss your ass enough?

One of the problems is the update/installation networks. Arch handles most hardware like a champ. At this point torrents are your best bet.

Maintenace screen time is another problem. If it is more than 5 hours a week, you lost me. I hate screen time even TV and sometimes cinema.

The level of skill of the user is also a factor (audience). Arch requires a very knowledgeable user. The Austrian Arch-Crap is just unsecured crap with my rating being toxic.

The rest is standard: reproducible builds, snapshots and the rest of the buzzwords that do mean something.

Let me know if you have a decent Qubes template that I can install the easy way. I did use Arch for a few month and some hardware wizards use it all the time, but they need a truck load of equipment to make it safe and anonymous.