Division effects everything.
Your perception that the LWA guys are out to get the "weaker", less populated arena's is not paranoia, its actually because you know you are taking from the union of the game for your own desires by asking the game makers to cater for such alternates. The point being, that HTC officially supporting a whole bunch of (mostly) empty arena's is pointless, even if is claimed that it takes nothing from the server, because the custom arenas already provide you with the basic means to enjoy alternate gamestyles that you desire. Like I have previously mentioned in other threads and other occasions, there is nothing stopping HTC from simply saving the settings of these arenas, and even previously popular events, and posting them online for your custom arena pleasure(s).
Concerning the downloads for events, that is rubbish; if they really thought that was an issue: They would simply create the event arena a few hours before to allow people to set up if that was such a dire need.
I hope people notice the simplicity of the situation here that custom arenas allow. They change everything. You could even work an "instant action" system into their presence (as I brought up on another thread).