I'm putting these together, because I genuinely believe that there are people who would like to be more involved and lead more events, myself included.
1) The reality is that asking someone to chat command, much less TS command, is an incredibly intimidating proposition for a lot of people. I have the utmost respect for our commanders and regular community commanders who are so comfortable getting on TS and leading via voice. I don't believe that anyone is suggesting that we command via chat only. TS is an integral part of TTS. But honestly? From my perspective, that of a non-commander and a member of several TT/World boss guilds, TTS has a subtle but pretty powerful stigma against chat commanding. It's difficult enough to recruit people to command via chat, and I imagine that it's even harder to recruit voice commanders. It takes a lot of confidence to do either, and while I'm not saying we should be cheerleaders for everyone (it's exhausting), I believe that there are a lot of well meaning people who, plain and simple, are afraid of commanding but would be fantastic if given the right encouragement.
2) And as for others stepping up, I love community nights. I wish that I could attend more of them, because they give people the opportunity to show that they are willing to step up. Having regular (orange/red/blue) tag commanders is fantastic for the rest of the week, but it also means that the same people are commanding every night and are inching closer and closer to burnout. If there were more opportunities outside of the scheduled community nights to command- as in the understanding that people can volunteer at any time to lead- there is a possibility that you might see more people stepping up.
3) Having a planned calendar schedule is both good and bad. True- we do have scheduled nights off where people are free to organise as they please or where it is a community choice of what to do. But having very little free time, like in the case of almost constant scheduled activity from beginning of NA to end of PAC, takes away from the possibility that someone may organise an event. By no means am I criticising or saying to throw out the calendar. I love it. I love knowing when things are going to happen. But it also means that if you have prime play time slots already filled, planning another impromptu event is going to leave both sides lacking and possibly irritable.
As Addy pointed out, Twinkie does have a much more active chat than others, and I believe that it significantly contributes to the feeling of community. You can't expect TS to be the only place to be social. Guild chats get chaotic, you have a million conversations going- believe me, I know. I'm in 4 guilds with active chats, and keeping them straight can be a pain. But as chaotic as gchat can be, there are people for whom TS is not the best or ideal way to bond with their fellow guildies. It gets just as loud and chaotic as guild chat, except that people can still participate in guild chat regardless of noise sensitivity, roommates, lack of mic, or what have you. We should be encouraging socialisation in both, because only emphasising one is alienating.