Yes Mechcommander is an interesting and fun game. MechWarrior: Living Legends (MWLL) is a total conversion modification for Crysis. MWLL is at its very core a mix between a First Person Shooter (FPS) and a Simulation (SIM). This will be achieved through the use of a, mixed arms massively multiplayer, gaming experience where the player takes part in a battle using a variety of vehicles and weapons. MWLL is following the concept set forth by Crysis of a sandbox feel where you get to play what you want and how you want it.
It is still a tactical game in that the way you use the equipment availble to you and the way you play as a team will have a direct and profound impact on wether you become a living legend, or a forgotten casualty.