Lets examine two quick points:
* Hardcore gamers like choices.
* Hardcore gamers like VOIP.
Based on these theories, ioquake3 is adding VOIP support for the next release. This internal support is going to bring along with it support for (entirely optional) Mumble positional VOIP audio. More nerd-speak after the break, the short and quick of it is, however:
We’re going to have VOIP for mods/new games, and baseq3. This is a pretty radical departure from the initial goal of not changing anything in baseq3, and is probably the single largest (obvious) end-user benefit for using ioquake3.
The fact of the matter is that if you want to blame someone for allowing it to be included, you can blame me (Zachary, lead omnipresent overseer of ioquake and related entities). If, however, this makes you happy and you want to praise somebody, give either big ups OR big props to Ryan Gordon (lead intergalactic space nerd) and Ludwig (Herr Angst).
Please, do not spoil them with both ups AND props.