More Command Identifier's

More command identifier's such as @HHP which is to do the command to the player with most health. please add some of the following

• @HHP: Effect the player with most health
• @HHM: Effect the mob with most health
• @LHM: Effect the mob with least health
• @LHP: Effect the player with least health
• @AE: The new all entity's
• @AP: The new all players
• @AM: Effects all mobs
• @AHM: Effects all hostile mobs
• @APM: Effects all peaceful mobs
• @ANM:  Effects all neutral mobs

Please add these it would make commands so much easier!!!!!