If all you have are core skills, you'd be missing out on much of the enjoyment of diving
Nah that is when the real fun begins. Because you don't have to think through diving, you can now spare brain power to activities that don't directly have to do with the dive itself.
I've said it a few times in my thread in the technical forum, the cave I saw during my cave course or in the dives just after I got certified looks night and day different from the cave I see today. "Is that a clay layer? Looks at those drip marks down the wall. OH LOOK A FOSSIL!"
Heck it was the same thing during the last weekend I was in Jupiter the first dive on the first day was horrible. I was out of my element because I was out of practice for that sort of diving. So I had to think through a lot of things. Day 2 was much better because I was much more in tune to that sort of diving.