Multiplayer character Idea

Heres an idea i had after reading this topic about the lack of mechs in ME3
http://social.biowar...ndex/12986416/1
and heres the drawing of the concept i had
http://droidsbane.de...-Idea-312943800
the i had was to have mechs as a playable class in Mass Effect 3's Multiplayer, this one based on the Loki's from ME2, this could be available as an Engineer or Sentry class, i also added the built in a soulder mounted heavy weapon and arm mounted blades similar to those used by Cerberus to make it stand out. story wise i was thinking they could be prototypes built by the Alliance or Mercenary groups being field-tested with N7 operatives.
Or we could always get mechs to fight against, would be a nice change from Reaper/Cerberus/Geth forces.