Hololens also doesn't really work outdoors (display contrast and tracking are the largest limitations), so there is no point of designing a system for supporting that when the hardware is not usable in such scenario.
Hololens also doesn't really work outdoors (display contrast and tracking are the largest limitations), so there is no point of designing a system for supporting that when the hardware is not usable in such scenario.
Indeed, HoloLens isn't great outdoors, however the current technology is capable of it (despite the HL design.) The visor can be darkened to function more like sunglasses, which solves the contrast problem.
I'm just looking 5-10 years out, in terms of what's going to be needed.
Evolving technology from an existing place is generally more successful than trying to invent the end goal at the start.
Information tends to end up in different systems. You have for example something responsible for the IoT tracking data of machinery, something else for the HVAC and maybe another system for the maintenance manuals. The proposed system could pull this information together, collecting from different systems based on location (and access rights) within the facility.
Outside the facilities, it might be good to combine information from electricity, water, telco companies when you are at the construction site. Think for example excavator operator having augmented reality view of all the pipes and cables in the ground. This kind of information might be already available via the web if you have suitable access rights. Something similar could be applied here.