I was gonna share what powerful explosion looks like but I just realised its a great idea and I'll keep my (stupid) ideas for me (You probably wont like it)
So far,the game looks good to me.The only think I'm concerned about in-game is the animations of the mechs. Noone can get a feel of the game without seeing the mechs move around,because every game has its unique movement system(a feeling that noone forgets. for example Unreal,Quake,Half-Life,Colin McRae,Need for Speed,Alien Vs. Predator...) Thats one of the most important aspects of Game Design because it gives your game 'unique and rememberable' style that wont be forgotten after the user hits the Quit button. So Enough teaching , show us some videos