Is your feature request related to a problem? Please describe.
Sometimes it's difficult to see immediate surroundings when X-Ray is active and lots of blocks are outlined. Feature request here is meant to increase clarity of immediate surroundings in situations where X-Ray blocks dominate the view.

Describe the solution you'd like
Increase transparency of outlined blocks as a function of block or chunk distance. I don't know which would be better: higher transparency when close or higher transparency when far.
Alternatively, or in addition to, increase or decrease line weight also as a function of distance.

Describe alternatives you've considered
Tried an already active feature: change view distance.
This sometimes works, but not always. One example is when mining ancient debris but you want to see all the nearby lava... could maybe change distance per block type, which I believe was already suggested?
I'm not sure if this is easy or not, but maybe dotted or dashed lines could be implemented?