There are a few exceptions, but every great QB has always had a #1 elite WR.
Montana and Young are top 10 QB's of all time and they had Jerry Rice.
Unitas had Berry.
Peyton had Harrison.
Brees has Thomas.
I can go on, but you get my point.
Also, we all know that Allen needs to improve the deep ball (duh), but he did start to connect on those late in the year and if Brown and Williams do their jobs in the playoff game, we are looking at Allen in a different light instead of complaining about his deep ball and his hideous bone head play on the final drive of regulation.