o/ Hi there! Lead Broadcast Producer of the LEC here. This was brought up in our Discord a few weeks ago and I gave a more detailed technical answer there, but a suuuuper quick TL;DR is... we want this too! But right now we are choosing not to, as it would mean giving up some other things with our in-game coverage.
While our show is live-switched using a Production Switcher, our in-game is entirely directed by our observers! For this, observers have a shotbox that triggers macros that pull up pre-saved scenes/configurations on the switcher. However, we use a different Production Switcher to the LCS, a Ross Acuity, and a unique limitation of this switcher is that all of our in-game macros and scenes require a physical button to save themselves to on the switcher itself. The only thing is... we're outta buttons! This means we would have to give up another saved macro for our observers (such as the base-race view) which we don't want to do at this time.
We're talking about upgrades for 2023, and exploring how we can accomplish this during the off-season after our finals.