I'm kind of defending WoH - your points are all valid about the game, design, and website, but WoH was designed to be a very short game - no more than 15 minutes.
Well, that's what the advertising says, yes. In LoL, a game takes anywhere from 15-30 mins to 30-70 mins, depending on the game mode (there are three game modes but only two are really used--plus there are AI-only mirrors, which WoH doesn't seem to have--and you can choose a queue for each game mode rather than queue for all three at once like it is currently in WoH). LoL is set so a player can play the fast mode for a quick fix or the long mode for a bit more strategy. However, if I can queue up at 5-6 am on a Sunday morning and experience a short wait time, that means quite a lot of people are playing WoH, I would think. Certainly enough people are trying it out right now to make the game playable, unlike DOTA 2 beta.
There needs to be a balance between difficulty and fun, and I won't say WoH isn't fun--when you aren't disconnecting from the game. A lot of people dislike DOTA 2 due to the complexity of that game for example, while HoN and LoL softened a bit as they branched out. The WoH games can run longer than 15 minutes, but with three teams the action is, as expected, fast, and simple. It's also unique, for now, as the heavy hitters are all 5v5-based.
A basic premise in WoH is to capture flags and hold them or capture relics and hold those in your base, and the first to 250 points wins. A similar mode in LoL counts you down from 500. Some of those "Dominion" games in LoL last a mere 6 minutes if things get particularly unlucky for the other side.
One thing I should have mentioned, though, in the prior post, is an example of champion/heroes. In LoL, a "Win of the Day" (once per 22 hours) grants you bonus in-game currency to equal that of around 200 points (not bad for 15 mins), while a loss would be more around 40 points. WoH gives you a slot machine at the end with more rotating chances based on your performance in the game and whether or not you're in a clan, so the variance of what you earn is affected by your gameplay but then ends up a matter of the RNG deciding your fate. As I said, I've experienced an average of 50 gold and sometimes get none at all. While WoH's champions currently range from 30,000-60,000 gold each to unlock, LoL's champions range from 450-6,300 points. In other words, if you win three games over the span of three days you can buy your next champion in LoL, while to own a hero in WoH would take, theoretically, hundreds of games, even if you get into the top rankings each game and unlock more slots to roll. I suppose if WoH is merely a probe on the market intended to make some cash then everything is in working order ;P.
Just watching the DIII Arena videos I can tell the PvP looks more fun and polished. I have a few friends who played Beta and complained about DIII being too easy, and bug-filled, so I'll wait a bit after launch to see how its PvP goes.