There's actually something about the Brompton that you LIKE?
That's new!
There is no 3 speed any more apart from the A-Line.
Would not say so. With the BWR 6-speed with it's 302% spread you are in the range of a 8-speed hub. The 3-speed offers only 179%. If you ever have to tackle the slightest hill you'll quickly recognize the difference.
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That's why people take them with them all the time instead of leaving them locked outside: The bike gets neither wet nor stolen nor vandalized. Which is a good thing if you ask me.
Maybe you should. It would either fit your needs better or it would calibrate your constant negativity towards the Brompton to something more neutral (or even positive).