There is the "speed of light" problem. As noted above, the actual speed of actual light in this game is not the speed of light, but is actually infinite. If Beagle Point blows up on the far side of the galaxy, the people of Sol would see it instantly - they wouldn't have to wait 65,000 years to see it. While it might "look cool" on the galaxy map, players who are astronomy fans (and there are a rather large number of those) would scream and shout about the unrealism of it all.
Related to this is the "fossilized light" problem of past supernova events. Example: the object we currently call the Crab Nebula was once a star, which we saw explode back in 1054. If we had ED-like FTL technology right now in real life, we should be able to fly 1000 LYs in the opposite direction to the Crab Nebula, turn around and watch SN 1054 explode all over again. The same would be true for all the other supernovae we've seen in the past 5000 years or so. So it wouldn't be just one "shock wave" the game would have to keep track of; there are dozens of supernova shock waves passing through the galaxy, right now; most of them we aren't even aware of yet, because we here on Earth haven't seen them yet.
Then of course, there's the inability of the game universe to cope with dynamic events. As much as players might want to see things like planets colliding, comets smashing into space stations and stars exploding, such things simply can't happen without a change to the objects on the server. Just like the Thargoid attacks on space stations; they can only happen during the Thursday server downtime, when nobody is actually watching. So if they did actually decide to implement a major dynamic event, we'd all collectively blink for the server update and when we unblinked, the universe would have changed. But we wouldn't actually get to see the change, which is what people usually want to do when they ask for such things.
Watchers of the game's codes would get advance warning that something might be up, with regard to a supernova. A supernova would have to be a special star type. Currently, there is no special class of stars for a supernova implemented in the game (though there are other objects we haven't seen yet, such as "rogue planets").
Finally, and despite all the naysaying I've been doing, it is entirely possible that some kind of planned supernova event like this may be in the works. Here is our evidence. One of the permit-locked regions of space is the Regor Sector, not too far from the Bubble. At the heart of the Regor Sector is the star Gamma Velorum, also known as Regor. Gamma Velorum is one of the nearest potential supernova candidate stars to Sol - 21st century astronomers think it could go boom at any time, with little or no warning. Although we have never been told what any of the regional permit-locks are for, it is possible that Regor Sector has been permit-locked to prevent unwary travellers from venturing into a supernova shock wave.