Fair point, and I'll try to answer this as an LSC member, albeit not on the committee.
LSC has a difficult balancing act to play - it has had a long term close relationship with the club (under owners / management of all stripes) and is only able to host events like this with the likes of Fisher and Igwe thanks to that relationship. The LSC chairman started the meeting by referring to the SOC meeting of the same evening, pointing out that agenda point 5 at Hen Lane was a report from the London meeting, and asked that in the interests of allowing the panel a calm hearing that no audience members should Tweet / text during the event. I've already described the security arrangements in place to prevent uninvited guests.
On the other hand, the president of LSC is Joe Elliot, and at the most recent dinner (35th anniversary dinner where Elliot was inaugurated as chairman), Gary Hoffman was made an honourary member. Gary is a long-term member of LSC and there is much natural loyalty within LSC for him and Joe. So we need to balance that against wanting to give the current board a fair hearing. It would sour the relationship with them if they made the effort to turn up and everything they said was posted online, twisted against them and lampooned.
So as for "why wasn't it held in Coventry" - well, the London Supporters Club is based in London, so for that reason we decided to host it in London at the pub owned by an LSC member, which is the closest thing we have to a London clubhouse. Wouldn't make much sense to host the event in Coventry when most LSC members live in the London area! Igwe, Fister and AT responded to our invitation and the fact that LSC has a strong relationship with the club - any other group, in Coventry and anywhere else, is free to invite them to a meeting.
My personal impressions from the meeting were mixed. I feel no more confident about the club now than I did before the meeting. Igwe simply trotted out the party line, defending SISU and blaming management for most things that have gone wrong - he came across as thoughtful but without strong answers. At times the answers he gave bore no relation to reality and common sense, but we appreciated him making the effort (especially as he'd been in Germany apparently). Fisher was more aggressive / blunt, answering questions more directly in an argumentative way, giving the impression he thought criticism of SISU was unfair - he did though have a bit of energy about him and made a lot more sense than Igwe.
AT was by far the most impressive - he spoke so passionately about the club and how finishing 21st would still be a disaster for him - he feels we should be "mid-table, pushing on" with our squad and stats, and was clear the we need a couple more strikers - every other area of the team and performance he feels is strong enough. I asked about the diamond and he said he's going to keep it as otherwise we'll end up playing long ball and that won't help us. He was very moving when he spoke about the support from the fans, how much it means to the players and how the team is really passionate and positive (unlike other relegation fodder teams he's played for). For the first time, he really impressed me and made me glad he is our manager.