The (classical) Standard Model only covers a tiny part of the mass scale up to the Planck mass, so it would be extremely unlikely (and disappointing) not to find anything beyond. A different issue comes up as to HOW this region might be explored. The current technology is limited, and even some perspectives of improvement, as promising as it is, will not open up a large amount of that region. Of course, disproving the “Cyclic Model” would perhaps be worth it (and be fun) …