the only reason I still deal with stupid wall warts is if one fails it is just one device that goes down, If that unit fails then everything in the rack goes down.

For the large wall warts that that cover up ports on the surge surpressor i use these and tie the warts to a lacing bar [Link: mcmelectronics.com]

Also Middle Atlantic PD series conditioners are spaced out to allow most power bricks not to cover other outlets [Link: middleatlantic.com]