Interesting idea, but I don’t see how this would be that useful to our groups AA games. I could certainly use it in Zombies or Last night on earth - I am notorious for knocking stuff over with dice in those games.
At the ends of my table, instead of dice towers, is an entire area for dice rolling. I found most our group like rolling the dice in the traditional craps style dice rolling as opposed to dice towers and space wasn’t really an issue. The removable battle-board I created can sit anywhere within the dice rolling region (or sit outside) giving ample space on each side to roll, and having all the units that are fighting visible.
The downside of the acrylic shield is if, like our group, you like to line up the units on a battle-board for mid to large battles, you are still going to need a space to set up these units.