If Tyranids have a weakness it has always been that they don't have a ton a effective ways to get people out of their transports. I would say that has changed a little in 5th. If you haven't seen Hive Guard in action, they are very good at what they do. With a 30" effective range and 2, S8 shots each, these bad boys make life complicated for anything less than armor 14. Oh, BTW, you don't get cover saves unless you're in it and they don't need LOS to shoot at you either. Nice! I will be fielding 6 of these brutes and they have yet to disappoint.