John:
I'm only quoting Maytag's "party line" on the removal of the trim strip - there were obviously cost-containment reasons for it as well. This same March, 1975 bulletin outlined the new, simplified bleach dispenser and the change from the chrome-topped lint filter to the all-turquoise one - two more measures that lowered production costs.
However, there was definitely a sales advantage to not having a front-panel mismatch between models. If a customer had "X" amount to spend, and liked having a really nice washer, it was possible to set her up with an 806 washer and a 606 dryer, without an obvious mismatch between the two - and the same thing was possible if a fancy dryer was more important than washer features. That meant some extra dollars could be squeezed out of the sale, because Milady didn't have to choose between spending beaucoup bucks for a fancy pair or doing without features she wanted on a plainer pair. She could spend a little more here, and a little less there, and still not end up with different-looking machines.
Sears was just the opposite. You either bought the pair, or you ended up with machines that were very mismatched-looking.