Professional Words We Really Need in the English Language

After a few years in the working world, I've discovered a couple of notable gaps in the English language that are really pertinent to professional communication. We need to solve this.
  1. A professionally appropriate synonym for "y'all"
    The lack of a 2nd person plural is distressing. I need a more professional version of "y'all" to use in emails, or I need "y'all" to become the nationally accepted 2nd person plural. Saying "you" just feels too pointed.
  2. A standard email closing
    "Best"? Ugh. Best what? "Thanks" can be passive aggressive if I'm not actually thanking someone. "Regards"? Old fashioned. Let's get some better ideas.
  3. An email closing that essentially means "Please read everything above really carefully because it's important, and I worked really hard at it."