Adding explicit intent for SWITCH/CASE fall through?

Hi All, Before creating an RFC I wanted to get reactions to the idea of adding FALLTHROUGH option to SWITCH/CASE for when the developer explicitly want logic to fall through to the next case and does not want to use a BREAK. My simples motivation for this feature is that my IDE (PhpStorm) always flags CASE statements w/o BREAKs because it cannot know when I intend for the logic to fallthrough and not break. If there was an optional FALLTHROUGH then my IDE could flag any CASE statements that do not have a FALLTHROUGH or BREAK — which would indicate an error of my intent — and avoid flagging all the situations where I intentionally want it to fall through. Beyond that, this might also be useful for other static analysis tools such as PhpStan. Ust Additionally it could be added in 8.0 and then in 8.1 flagged with a warning when a CASE does not have one for the two, but only if people don't object to this. While I know some on this list feel strongly that warnings must come with to future plans to generate errors I would personally be 100% okay if it indefinitely generated only a warning. In summary I want a mechanism to be allow me to explicitly indicate my intent with respect to SELECT/CASE statements. What do you think? Is this worthy of an RFC, or is there some reason a majority would object to such an addition? Thanks in advance. -Mike