I saw this already. Terrain okay fine but how about airplanes?
What exactly do you want to see improved? Anyone can say make them less cartoony, but what does that mean? Subjective is rather vague. Can you be specific? The HTC guys read the forums and are always looking for relevant contributions. Putting a date on a graphic engine isn't a solution, there are some fantastic older systems and some horrific new ones.
Better shadows? Better reflections? Be specific and some of us in here can probably point you to a link that has addressed or is addressing the subject. Like, for example, I addressed a comment you had on graphics, I pointed to the most recent graphics discussion that was related to terrain. It wasn't what you meant. It's not my fault I guessed wrong

Be specific, guessing and trying to figure out what you meant seems like a dead end to me.
In the mean time, I think I may have wasted my time trying to be helpful, I see where this one's heading already.
Have a nice day.