Been playing games on PS5Pro via PSPlus, and my feeling on this is I appreciate the game as offered on the subscription, but I have zero interest in add-ons/DLC/etc. I figure I'm old school and I'm only interested in the original vision for a game. I'm not interested in cosmetics or paying for anything beyond the subscription. Most DLC I have ever paid for left me feeling a tad disappointed, as if it always felt like an afterthought when they designed it, and actually distracted from my overall experience of the core game itself.
I found Diablo 4 surprisingly really, really dull. I guess that type of game appealed to me ~20 years ago, now I just found it an absolute button mash with little care about the dynamics beyond surface level, little desire to understand the characters, and a feeling like I was trudging through mud to achieve something. It just wasn't very fun.
Tried Far Cry 6 and AC:Valhalla, and had a blast with both. No interest in the DLC of either, though.
I feel I've received great value from the subscription. My GF and I have played about 10-15 games in a year's worth of time and easily received value. Don't mind just waiting for past top-rated games to make it down the queue every month, either. This is my first console since a Nintendo! I'm liking it a lot more than the PC headaches and upgrade hassles of Windows. That, too, will never happen again.