Quick thought that popped into my head just now: remember how polished and smooth the LoTRO beta felt? The game levels 1-15 seemed amazing during beta, with great quests, landscapes, and story. It was not until release that we all realized the game was a bit empty at levels 35+ (fixed now).
Am I the only one making the comparison with the LoTRO beta cap and the AoC beta cap? Add in that the closed beta NDA is still up, and all the tech issues… well the post below states my opinion on how AoC will fare, but this 1-20 limit just adds more fuel to that fire.