Just the qualifier "bothers to register a message board account" already restricts you to an extremely narrow slice of Avernum players.
I think my problem with how much these "player choices" are hyped up, is that they have become extremely formulaic. Picking a side was new in A Small Rebellion, and it affected most of the scenario -- that was cool. In Nethergate, it was woven into the game mechanics and having it run for an entire game, that was new too. In Geneforge 1 the moral ambiguities and factions were new, and in Geneforge 2 there were yet more represented. But since then it has kind of been old hat: minor, uninspired variations on "faction 1 vs. faction 2" with most of the game identical, a series of uninvolved* quests particular to each faction, and then one or two endgame zones that are totally different depending on what you chose.
There's nothing wrong with this, mind you, it's just hard to be excited about it any more, or see it as a real selling point.