Long story short: Please replace the low-quality and extremely laggy VOIP/VON by integrating sophisticated third party technology to the game. To my knowledge, both Mumble and Teamspeak 3 make this possible. Licensing should also be possible.
Pros:
- excellent voice quality
- minimal latency
- decreased workload of game server
- lag-free voice
- happy players
- no more grey hair for VON developers
Cons:
- ?