I'm not familiar with the topic, but isn't there still room for new discoveries?
Now (if this is confirmed to the 5 sigma needed) the experimenters have to actually go looking for new stuff - a harder proposition, fraught with interpretations and Agendas.
I consider LHC as the best microscope we humans ever build. Our exploratory quest and adventure will remain ever more interesting and baffling when we start to probe in higher energy levels. This will be irrespective of whether the presence of Higgs boson is established or not. And there is no reason to think otherwise, since in the past the deeper and in finer scales we probed, strange phenomena had popped out, requiring more new theorems and scientific understanding to explain them.