Eventually ranking will dip down and they won't be invited right? Till then let them have fun, its not like they are stealing some team's right, all the teams that are good enough are already there. And teams that feel imperial have taken their spot should have done something in tournaments like major/dallas/ pro league to get a good rank.
Everyone knows they are not playing to win championships, they are just having fun. If they wanted to win things, they would have gone for a young aimer in place of fnx. That team could have potential to win some NA region tournaments.
FaZe and Navi are too strong to even challenge for trophies(even thinking to do so), its better to entertain crowd, meet fans after LAN for guys like fallen and fer.