Yea its decent... no cracks.. a couple pieces have lifted an inch or so, but hacent cracked... But since the liner lip is seated in the plastic coping, which is then ( I believe) inserted into the wet concrete, I dont know where to start.
We work with 2-4 pools a month, I have alot of knowledge about pool construction.
Correct, the plastic coping (and on some older vinyl pools, the coping is aluminum) is seated IN the concrete.
If you remove that existing concrete deck - you will interfere with the plastic coping. For those new to this - that coping is what anchors the vinyl liner to the pool structure.
Also, the concrete decking is supported by steel braceing around the entire perimeter of the pool. So, if you take the concrete up -you may find the ground to be quite settled under it. The steel bracing is attached to the supports that the metal sides are anchored to.
From my experience around pools (vinyl, concrete, & gunite) - I WOULD NOT take up that concrete decking. If you want to enhance the decking you can do an overlay of pavers ONTOP of the concrete, this way you do not interfere with the coping and the liner.
This pic is a job where they had they typical 3' concrete decking around the pool. Do left the decking fully intact.
I'll have to look, there is a 48% chance I may have pics of one of our pool projects showing the concrete molded into the coping.