Pros
Great job for Engineers as we never have to go into the factory. We get to spend our entire day dodging work by going to meetings. Another great hiding place is the fab itself. That place is usually a ghost-town, void of anybody but the shift equipment techs. Great job for Process Technicians and Process Engineers as well, as they are not required to spend any time in the factory. Another great thing is that even if you do absolutely nothing, they'll bring in some IBM Engineers to pick up your slack.
Kontras
Don't call yourself a state of the art factory if you plan on using SiView or Xsite. It's like driving a Ferrari with a Yugo motor. Second source or start from scratch. Do something, anything, but please quit band-aiding these trash programs and continuing to tell us that they're great.