BioWare actually started hub structure since at least NWN. Also look at the BioWare cliche chart made by
Ian Miles Cheong LMAO.
I used to refer to the four locations thing as "Find four items" (not the case in all the games) but I suppose that is an extension of the four locations.
One thing I can say about BioWare games is that every BioWare game I have played, I have finished it. I would never play Dragon Age Origins or Mass Effect 3 again, those were both bitterly disappointing, but I did finish them. I think that is partially due to the repetition of structure/cliches, it's so familiar so it's intuitively 'easier' (not referring to difficulty) to complete.
I think I did attempt to replay KotOR in the previous decade (the 2010s) but I was shocked at how badly it holds up in terms of dialogue/writing - like actually so bad in comparison to KotOR 2. For me Peragus > Taris any day. From memory (and we're talking trying to remember 15-20 years ago) the combat was a bit better in KotOR than KotOR2 but it's like comparing different grades of lard.
I also agree with one of the posts above - crafting in KotOR 2 was really good actually.