Jarom's suggested schedule would average at least one less P5 caliber school a year than BYU's typical MWC schedule (assuming you do not treat TCU as a P5 or count it as a wash if we had Boise State every year). If you want respect on the level of P5 programs you have to play a P5 schedule and win. Certainly we shouldn't go backwards and play weaker schedules then we did in the MWC.
Here are BYU's P5 schedules while in the MWC:
1999
Washington
California
Virginia
Utah
2000
FSU
Virginia
Mississippi State
Syracuse
Utah
2001
California
Utah
Mississippi State
Louisville (Bowl Game)
2002
Syracuse
GT
Utah
2003
GT
USC
Stanford
Notre Dame
Utah
2004
Notre Dame
Stanford
USC
Utah
2005
BC
TCU
Notre Dame
Utah
California (Bowl)
2006
AZ
BC
TCU
Utah
Oregon
2007
AZ
UCLA
TCU
Utah
UCLA (Bowl Game)
2008
Washington
UCLA
TCU
Utah
AZ(bowl)
2009
OU
FSU
TCU
Utah
Oregon (bowl game)
2010
Washington
FSU
TCU
Utah