I agree about what you're saying about Adobe. Sure, Adobe paragraph composer is a great tool. I disagree completely with Adobe about their subscription approach including the fact that it is very intrusive into the computers' system ressources. Like you said: “oh boy!
I was a professional graphic designer for a few decades. I started with QuarkXpress, I then switched to Adobe Suite in 2002 and I shut the door to Adobe in 2015 to adopt Affinity Serif software. Affinity publisher isn't that far away from Adode InDesign typographically speaking, pretty near in fact.
I still miss the variable glyph width where I was using -98, 100, and 102 values with flushed texts, right and left, this for the production of a 200-page book. I was using a dedicated paragraph style sheet to fix only the problematic areas, there was no need to used these -98, 100 and 102 values everywhere. The specific problems that may occur here and there are just asking for a specific solution, and that's where there variable glyph with were so handy to solve these problems.
I'm pretty sure that Serif team will eventually fill this gap about the variable glyph width, I hope so. This option should be implemented into the Justifications' palette. That said, as is, it is already pretty easy for the experienced graphic designer to produce some highly professional designs, the proofs are there everywhere now with million of users worldwide using Affinity Suite. By the way, there is no obligation to use flush texts right and left. I saw by the past many award winning graphic design concepts that were built with the paragraphs aligned to the left, but it is not applicable to all products.
Finally, I published the settings up here, because I updated lately my Affinity software to version 2. Even if I'm not anymore active as a professional graphic designer, I still love to experiment and evaluate the creative possibilities that Affinity is offering. Especially in the context of the update, I was looking to retrieve the best justification settings and I found this thread where where I wanted to contribute by documenting some of the best practices in the field of the graphic design.
I consider that what Serif did is an amazing job in many ways. Of course, there is a learning curve, but mostly everything is so well documented.
Overall, I am a big fan about Affinity suite, I'm having too much fun to explore many of its creative possibilities.
Congrats to all the Serif team being a very strong alternative to Adobe. By the way, the parameters into the auto-hyphenation box that I showed in my previous post are not to be taken as a fixed rule, it may vary with the usage of some other languages like French or other. There is always some place to experiment.