For boosting First Person View you can modify the wifi extender with one or two external antennas.
The Vision 2 + uses 5.8GHz for control signal, white antenna that needs to point to the sky, and uses the wifi extender on 2.4GHz to receive the FPV video and flight stat overlay info.
There are a lot of youtube videos showing how to mod this and there are sites that sell parts or kits.
If you need directions pls let me know and I can provide the links.
From what I have read so far there are a few options.
1. Open the extender, connect to the main antenna connector (left one) a cable which allows you to use an external antenna, often a Left Polarized (since that is what the phantom vision 2+ default antenna uses) skew antenna (4-bladed for TX).
2. This will create a receiving amplified bubble around you
3. additionally, for far away better reception, you can use a helix antenna for the secondairy antenna port.
Regards,
SexyBeast
Utrecht
The Netherlands