The suit can do a lot of things but it requires either dark matter (which they ran into once, and which so far hasn't been seen in Trek again, or a Supernova, which is never around when you need one.The suit is just a little too far into crazy tech to be buried. I mean, the suit can go anywhere in the galaxy (universe), at any time. I'm sure the suit can be lost, but not all the research that likely went into it.