- The 25MB file size limit is absurd and could cause real harm. I can't imagine any rationale at all for this. Storage is so cheap. There's also an arbitrary limit of 5 maps at a time per author, which is hilariously strange; needless to say, the most fun custom maps in WC3 and SC:BW came from prolific authors.
- Ars doesn't mention the fact that their current system for browsing and playing custom maps is broken beyond belief. It's more or less impossible to play maps that aren't among the most popular on Battle.net. (details: http://www.teamliquid.net/forum/viewmessage.php?topic_id=139...)
- The change everyone is complaining about stems from an actual good idea. In WC3 and SC:BW, people would constantly make tiny, ineffectual changes to custom maps, resulting in a profligation of one million versions of those maps, each of which you would have to download when you encountered them. You also had little assurance that someone had not modified a map to let them cheat it. The centralized distribution system is a real convenience, as it has the potential to avoid these problems (although they are still present right now, thanks to Blizzard's horrific design.) Unfortunately, it makes Blizzard somewhat responsible in the eyes of consumers for the content on the system.