Here are several possibilities, in no particular order - all I've either installed and followed for a few years (at least) so know they work:

1) Get the Maytag fixed?

2) A stackable washer/dryer would fit your depth and width description. Whirlpool makes 24 and 27", as does GE. Frigidaire makes one in 27" which is very highly regarded for it's cleaning and known to fail the day after the warranty runs out. The Whirlpool, Frigidaire and GE 27" models wash a full load. The GE seems a bit easier to install, the Whirlpools are easier to learn if you're used to traditional. Both will need a second rinse as they are, unfortunately, HE.

3) The mold problem with front loaders was caused by American consumers no longer knowing what their grandmothers did - you NEVER close the door completely, you MUST run a HOT water wash with oxygen bleach at least once a month. Then you NEVER have mold. Ever.

4 )Discontinued but still occasionally in big-box stores are the Electrolux 27" front loaders which are only about 24" deep.

5)Cold water washing and cheap fabric softener are at the root of 99.999999999999% of mold, scum, dirty washers and, yes, premature failure of washers. If you must cold water wash, then use top of the line detergents and accept that at the very latest, once a month you MUST run a true hot water cleaning cycle with chlorine bleach.

I think it's worth pointing out that a well restored Maytag made prior to the Whirlpool takeover is going to be much cheaper than a new SQ and will with 100% certainty last the desired 10 years, if not longer than the SQ.

Yes, I think SQ is the only American made toploader right now which is well made and good at washing. I also think it's way more money than one needs to spend when there are still so many hundreds of thousands of outstanding Maytags from the pre-Whirlpool era out there.

They're good machines.

Your argument for not looking around is also unassailable.