Build a wooden terrace on the existing surface (paving)

[*]Is it basically possible/advisable to lay the wooden terrace on pedestals in this case? The stability of the substructure would certainly be given then, but the unevenness (especially the mentioned depression) is quite pronounced. Or would the paving have to be laboriously removed? I have little to no desire for that.
[*]Does the depression pose dangers during rain? I understand that the substructure must not lie in water. Due to the pedestals, it certainly wouldn’t. But what about water that enters the depression through the gaps of the terrace during rain? It would surely take a long time for the water to drain there. Would that be problematic? Or would most of the rainwater run off over the terrace? Not much water should flow onto the paving through the gaps, right?
[*]The light well (30 years old) has a strange width of 112 cm. I have read about light well covers, but they all have “standard sizes.” Is it too simple to just build the wooden terrace over it and then install a second light well cover? But how? Cutting out would damage the substructure, wouldn’t it? Remodeling the light well? That would certainly call the load-bearing capacity into question, right?

Is it basically possible/advisable to lay the wooden terrace on pedestals in this case? The stability of the substructure would certainly be given then, but the unevenness (especially the aforementioned depression) is quite pronounced. Or would the paving have to be laboriously removed? I have little to no desire to do that.

Does the depression pose any danger in rain? I understand that the substructure must not be in water. Due to the pedestals it certainly wouldn’t be. But what about rainwater that gets into the depression through the gaps of the terrace? It would surely take a very long time for the water to seep away. Would that be problematic?

Or would most of the rainwater flow off over the terrace? Not much water should flow onto the paving through the gaps, right?

The light well (30 years old) has an odd dimension of 112 cm in width. I have read about light well extensions, but they all have “standard sizes.” Is it too simple-minded to just build the wooden terrace over it and then install a second light well cover?

Simply build the wooden terrace over it and then install a second light well cover? But how? When cutting out, I would damage the substructure. Rebuilding the light well? That would seriously question the load-bearing capacity, right?

No problem at all. Use freezer bags and moistened screed/concrete (bag goods). That’s also how the pragmatically minded gardener likes to do it. Nope, it works now too. Most of it flows through the gap. Do you really need the light well? Just build over it and that’s that. Put a cap on it and build the terrace around it. That’s no problem either. “Pedestal bearing” cheap (substructure Bongossi):

Nonsense. You simply build the terrace around the light well. There is no problem. Get a perforated grate or similar from the locksmith and lay it on the substructure.