MG sentries are a must have

Everyone needs a MG sentry, and here's why:
1. keeps the chaff off you for crucial seconds while you call in strategems or do objective actions
2. quick recharge time, can use it many times in one drop
3. functions as a scout for you.
4. Can pull mobs away or make sure they don't approach

Especially in the cities where there are a million blind spots, and doubly true for the new bug missions where the bugs just come in incredible numbers. You've got to have an MG sentry!

Of course, you also need to place and use it effectively, including not blowing it up with orbital strikes, mowing down your self and your fellow divers, protecting it from chargers (unless kiting the charger is the point)...

At this point though in any mission I find it hard not to bring the MG sentry. Anecdotally, in my missions more and more I see other people bringing this (and often the gatling, too, which I also almost always bring although its longer recharge time makes me consider eagle strikes instead).

I'm curious how many of the rest of you feel the same way that the MG sentry is a must-have?