As I recall you had to TUNE those old electric pianos mechanically, and it was a chore. I don't miss the old stuff. The Rhodes and Wurlitzer sounds were compromises from the start. They sounded like that because they couldn't achieve a real piano sound without a real piano!
We got used to hearing them, that's all.
At one time I could barely get all my gear, as a single, into a full-sized Chevy van. Now it all fits on a Rock'n Roller dolly.

Despite what many people think, even cars are built better now. If you service them, they will last several hundred thousand miles. My 57 Chevy got 7 miles per gallon, and was constantly needing repairs. My 97 Silverado has 211,00 miles and is going strong with only normal maintenance.
My recently acquired Ford Expedition got 23 on its initial voyage from Dallas to Shreveport. My "old" Scion XB gets 34 and has never needed anything except tires for it's 82,000 miles so far.
Point is we remember fondly our old stuff, but that doesn't mean it was better, or as good, as what we have now.
I had a really good electric typewriter, but I don't want it back!
I don't miss the old stuff at all.
BTW, I'm just playing Devil's Advocate here. I fully understand the "feel" and sound of a B3 and leslie. Nothing like it. I just don't want one anymore.
DonM