"If you actually adjust those to where they contact the axle, like you should" I have believed for the past 50 years that those screws were just a convenience, helping one to line the wheel up quickly for a speedy wheel change/ I have not used those screws with because the bike di not have them or the threads were frozen.the screws broken, sometimes for years.

"The rollerbrake adds ANOTHER small housing" Isn't the thief just going to take the bolt cutters he brought for cable locks and cut both cable and housing?

I do agree that making things harder does seem to improve the odds. I have never had a front wheel stolen from inside a Lowrider rack and almost all have been quick release. There are too many fix gears here in Portland. I suspect many thieves have 15mm wrenches.

Ben