I've been commuting GPT-MEM-MSP on NW for several years now, and yes, it gets old. However, a long enough connection in MEM means Interstate BBQ, so it's got that going for it.

Plus, every now and then an unfavorable airfare comes up for that route and my preferred schedule, so my alternative is usually GPT-IAH-MSP on CO, which changes it up once in a while (and a long enough connection means Pappasitos or Pappadeaux )