Can I change the "Staff" Group Name?

Support
3

Nope, you will run into issues in so many ways.

2.6.0 :004 > Group.find(3).name
 => "long-staff-name" 
2.6.0 :005 > Group.refresh_automatic_groups!()
 => [:everyone, :admins, :moderators, :staff, :trust_level_0, :trust_level_1, :trust_level_2, :trust_level_3, :trust_level_4]
2.6.0 :006 > Group.find(3).name
 => "staff"