I recently started using the Angel+Bob packs. After trying them out for several hours I came to love them a lot.
These tweaks would be a much needed addition to these two. However: I've had quite a good run on the map and don't want to start over again. Can I expect it to work with my existing save if I remove all "old" machines and recipes from my factory?

That should work just fine. Just keep in mind that if you activate recipe/building changes that you will have to change all the recipes.

Yeah. I'll do this even before adding your "mod of mods" and use the opportunity to rebuild half my base.
Thanks for everything!