it is absolutely crazy, and I am quite sure you will get your 200W amp sooner or later due to such craziness
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. It may be (just may be) sad but true that many of us would not realize if you are using only fractional watts now with peaks of <50W, more power won't improve sound quality dramatically (perhaps subtly/slightly), until we have owned one or two, and only after a long enough period of time, say a year.
I believe that's why most people who claim more power won't improve sq in fact are people who have already owned power amps for years. Surely there are enough of power amp owners who never bother finding out if they may be under the influence of Placebo effects. Some never worry about it as they just focus on enjoymnet, others wouldn't want to face reality so they subconsciously avoid any opportunities of find out the truth. It would be the crazy ones like me, who would swap things in and out multiple times in multiple ways, taking measurements and involve friends and family members to get their impressions etc., in order to get to the truth, or near truth.
Regardless, it is a good feeling to have 200W on hand when you know full well 99.9999% of the time your mid to high end AVR such as the MRX and any Denon 3000 series (ask ADTG) are operating well within their specs, example: less than 1W average when listening to 2ch music programs with peaks to 30W while listening to average spl of 75 to 85 dB in a small to medium size room. My recommendation is, get that amp of your dream and move on, it is worth it, to the point if that means I have to quit coffee for a year and/or eating out, I would do it in a heart beat. Of course amps do offer other benefits beside the controversial one of improved SQ.