The most useful feature for me, as an engineer in this field (oil & gas), was being able to simulate different scenarios using well logs or seismic data from previous wells drilled nearby; not only that but also having all my software up there available so I can see what's happening under each scenario would be very helpful too! Also it gives you access via your mobile device if needed while out working/in meetings etc., something which other simulators do NOT offer - no lag either.
Sometimes when loading certain types / sizes files into some programs they take forever!! It could just load quicker sometimes instead taking ages like now? Definitely worth trying though because otherwise its really difficult getting work done whilst away form home office due weather conditions e ect.