Some features are “missing” or don’t work in a similar way. For example, Affinity Designer doesn’t have shape replication tools like Illustrator, manual copy paste is required. You also can’t trace an image to turn it into vector outlines. Just two things off the top of my head that I noticed because I used them extensively in Adobe Illustrator. So if you’re only using a subset of features you’re probably fine, but without testing Affinity’s products for yourself it might be hard to tell if they’re a like for like replacement for you.
It's been a while now but I got Inkscape (free but clunky Illustrator alternative) to do shape replication across a path for me once, and then I copied the result into Affinity Designer. Obviously if you need to do that frequently, it's not gonna work well but I've only had to do that a few times since ditching Adobe.
Or perhaps you are describing something else I am unfamiliar with the terminology.
I've been going back to several tutorials on youtube for doing things affinity - as it seems to have the capabilities I am used to with the old photoimpact, it's just finding where / how is not the same.
