"if you want a chromatic instrument,with basses available there is one called the piano accordion [unfortunately the larger sizes are difficult to play with drive]"

Which is exactly why, Captain, I prefer the smaller boxes. Luck found me some 'smaller' (physically) boxes - designed for ladies and children - in which the keys and button spacings as physically smaller.

So called 'minatures' are apparently no longer made - I have a full 120 bass double treble reeder with a dual position bass register switch - which is physically smaller and much lighter than my 48 bass. You can get the same 'drive' with the bigger, heavier boxes, but you need to attend gym for a while - I'm not kidding about that! You do need to build up the left shoulder muscles,

I can get lots of 'drive' with the minatures, and it is much easier for the 'bellows flutter' technique - which I have found so useful for some styles that if there are other box players around, I usually leave it to them to demonstrate the 'traditional oom-pah-pah squueze box' style. :-P

The most 'drive' I can get is from my 32 bass double reeder - I call her 'Blondie', cause she's a real screamer... :-) actually plays louder (and more booming bass too!) than some of my full size 120 bass boxes...

~~~~~~~~~~
"The trick to know is that on the 'home' row for the currently active chord, there is no note that is wrong. "

Well, that's the 'trick' with all 'diatonic instruments'!!! Now it seems that we have to kill you... unless you put on a blindfold and roll up your left trouser leg...

The same comments for 'diatonic' tin whistles vs 'chromatic' recorders...