Thanks to those that have commented on their battery falling out on a crash. Sounds like it is very common. I would prefer mine to stay in on a crash so I'm going to look for a way to secure it safely.
Any final thoughts from anyone one on:
Make it stay in
Or
Let it fall out
The LiPo battery in the Phantom 3 is structured far differently than the "common" LiPo battery. My fear is that if you tie-wrap or in some other way secure the battery, in the event of a serious crash, the battery, instead of falling out, will either be destroyed or get smashed in the wreck and start a fire - or all of the above!
I personally (after two crashes) think the battery falling out is not so bad. Look at race cars: while all those pieces are flying off, experts are talking about released energy vs kinetic energy and how all that energy being released is beneficial to the driver. If your Phantom slams into something and the battery doesn't fall out, that pound or two will probably do no good.