Wow this is awesome! Havent tried it yet but I NEVER thought I would see the day when this would happen. It's kind of a yucky chilly day today so I dont think I'm going to try it out yet although i plan to take it as high as i can still visually see it.
Speaking of which I'm assuming the LOS rule is with your own eyes and not binoculars right?
I've tested the breeze out with other batteries and through all of my testing my opinion is all the parameters were locked down for pretty close to the best overall performance taking flight time into account. It WILL fly with way more weight from an upgraded battery but its heavily outweighed by having a serious affect on flight time so it's not worth it.
One of the problems with a higher capacity battery is it will not center the weight properly so the drone is forced to fight the lopsided weight balance which of course will also affect flight characteristics. You cant mount the battery on the top because that's where gps 1 is and you cant on the bottom because you have your optical flow and ir sensors.
I posted in another spot a question about outdoor flying with gps off and if the breeze is still limited by the geofence somehow and I would still like to know that answer if anyone has it.
I've got a 6606 dual band off of ebay for $40 used shipped but although I have set it up I haven't actually used it. I mention this as Doom has used his and you can still get them right now off the bay. I believe it says the power requirements are 2.1A off the USB and it worked fine off a 2A one as untested this even though I've got a couple portable battery packs that output 2.4A I think (or at least they are labeled for it

)
Edit:
I'm really glad that the old breeze limits are still shown
I'm assuming the speed comment was because it vibrates a lot.? I dont actually mind that it's slow horizontally really as it's meant to take vids but I really dont like how slow it gains altitude. I'm assuming changing the max speed also affects its climb rate...