I don't have a lot of experience with the lighting connector, but I can see that the idea of not having to care about the insert direction is good, and fortunately that was adapted by USB-C.
My experiences with mini vs. micro USB is however the reverse of what yours seems to be.
Mini is larger and should probably be more solid, but perhaps it is just clumsy, and for sure it took up a lot of space on the host side, which I believe was one of the main drivers to go for the micro.
I will however admit, that I don't like the USB 3 version of micro USB.
I have one external HD with that, and it looks very flimsy.