[RFC] Exception type hint

Hello, I am writing to you regarding my issue on php src available here https://github.com/php/php-src/issues/8843 and the request of the creation of an RFC. I would like to know if, like all the recent improvements of the php 7 & 8 internal engine goes (return type hint, arg type hint, props typehint, etc) It could be beneficial for the whole ecosystem to have as well exceptions type hint. framework/libraries could leverage this with internal exceptions classes/interfaces and devland code could rely on those to better handle (un)predictable code execution leading to exception I can of course imagine/understand that this may be a deep internal risky feature but felt the need to discuss it, so please feel free to answer or decline this. Kind regard, cheers! Antoine,