That's a nice piece of concept art.
How is an unbreakable fence defeating the purpose of the game? And even if it does, who cares? Frankly I'd take an additional, unique form of fencing that adds to the diversity of our park infrastructure and is also unbreakable over sticking with what we currently got any day...I included this in my previous suggestion of enclosure updates https://forums.frontier.co.uk/showthread.php/450943-Enclosure-ideas-for-variety. But one comment I received was that with moats in place now dinosaurs for sure wouldn't be able to escape. So it got me thinking that it beats the purpose of the game if you added it in. I'd still welcome it tbh but I just couldn't justify it's inclusion to balance out how dinosaurs are gonna escape. hehe