True, but it's the Master's job to suggest things like that. (Along with everyone else, just he's required to do it)
True, I'm not the most active person on the forums, but I'm in chat. A lot. Most of my suggestions were said in there. (Personally, I think Earth is easily the most balanced/OP element right now, if you compare cards with other elements, such as Fate Egg/most mono deck's cheap hitter vs. Graboid, Hermatite Golem vs. Abyss Crawler, Antlion vs. Deja Vu/Most small creatures. Also, it's not missing anything. Got the healing, defence, perm-control, creature control, rushing.)
Also, it functions best with splashes, whether it be Darkness/Devourers, Time/Graboids, or Gravity/Pulvy, all the decks work to a great extent and are very adaptable.