Why didn't the Centurions have something like GPS units in their suits rather than just on their watches? Having to rely on someone to call in your coordinates so your armor and weapons can teleported onto you is highly inconvenient.
- According to the comics, their exoframes were already complex enough that adding communications gear was impractical. The suits (or a teleport vest) provide the actual beaming coordinates.
When you realize that Doc Terror's war machines
are cyborgs, meaning they have living, probably human, brains in them.