Remove default case insensitivity from regex search and embedded regex search queries

I understand about the Match case button in the Search pane. But it is missing from inline queries (not shipped with the Query control community plugin, either).

I also understand the majority of people not needing to use regular expressions in their searches.
But when I search for an [A-Z] character set or something similar, I want results for exact matches meeting the criteria in my pattern.

Current workaround: none in embedded searches. There is not a regex flag like \i for case insensitivity to use for case sensitivity.

Suggestion: when user starts query (embedded or otherwise) with / for regex, the case sensitivity is honored unless one is using \i. The character sets specified are honored.