[obican]

Since you need the booster mode for 4K video or for longer video time in general, it makes sense to me to give the grip a headphone socket. They even provide an adapter cable to another headphone type.

 

And the battery in the body can be charged by USB, so no need to remove the grip ever.

 

"Bigger grip" is not obviously for me, the little part which blows up the camera's main grip makes a bit of a difference.

 

The AC-adapter as part of the grip makes it an even better offer. This kind of stuff is expensive at Nikon's. And on top of it, I need an adapter hwich goes in the battery holder instead of the battery, so a lot ado before ready to shoot with AC power.

 

And still, the whole unit (grip and body) is much better to hold and I think, also lighter than a Nikon D7x00 + MD whatever.

 

 

And in the Sony camp, we have no way of running AC power/USB tethering/RF remote control at the same time since they use the same Multi Interface micro USB port. You can use the Meike battery which has a built in RF remote which is pretty useful and some third party adapters go into the battery socket to make the camera run on AC power, but still you can't have them both at the same time.

 

Third party, saving Sony products since... whatever.

 

 

Edit: If you also have the LA-EA4 adapter, you can't really use its tripod socket if you have the grip. I put a L bracket on the LA-EA4 and use the side of it to mount the camera on a tripod with heavy lenses. It's hilarious especially with a flash trigger on top.