Thank you 
I think this is definitely an enhancement that should be considered. Especially when using the Default Posts as homepage and wanting to edit the Theme Options.
Doing changes to the Stack, or specific Stack options, such as (for example) Filterable Index, enabling the Post Carousel, Slider (blog), Widgetbar, etc, without seeing these changes, and having to save and refresh a different screen is quite annoying.
With most themes that don’t use Cornerstone but the Wordpress Customizer, when editing the Theme Options you can see the homepage changing live, and make sure everything is as desired before saving the changes.
I think it would be a worthy enhancement. I also understand that the majority of your customers and X/Pro users probably don’t use Latest Posts as their homepage, and therefore it’s likely not a priority 
Kevin