I'm still getting used to it! But when the Int'l terminal opened 20-some years ago with A# and G# gates, it was obvious that the master plan was to number the BCDEF. What it does accomplish is eliminating the letters after the gate numbers, because each pier was limited to 10 unique numbers - same as LAX terminals.

It will help at LAX with respect to what now shows as Terminal B on many itineraries - "... is Terminal B?" Bradley, of course, built after the current terminal number sequencing (of course, there wasn't a 1 back then )