ok time to clear some stuff up and put to bed the pylon debate.
As I stated the pylons are done, I am happy with they.
As for how vunerable they are, they are no more at risk of detachment than any other trek ship from the NX-01 to the Sov.
So it is time to move on from the pylon issue I am not re-building them again as I am happy with them. And they won't snap off any easier than the JJprise of the kelvins nacelles.