Would it be possible to improve your plugin for timezone change into a page

Hello,
I took a look on the web and there is nowhere such tool. That would be really helpful for many of us and in every cases.

I imagin a dropdown with the timezone location to insert in the page with a shortcode.
And another shortcode we can put around every date or hour we enter in the page, with the formatting we want like “G:i a T” for exemple if we only want the time.

Exemple of user case:
We have an event page and we show date and time on our timezone into the entire page.
The visitor can select his timezone in the dropdown somewhere inside the page, so all the date and hours reload and update to the choosen timezone.

That would be possible ?