Quoted from JLebowski:It's gotta be a parts issue. Why else would they switch to making the more basic SE's on the line as seen on Instagram? Isn't the SE the lowest demand & lowest profit margin version?
My guess is that JJP wants to get a couple hundred of each game model out in the public so that these early buyers can be the beta testers for the game and see if there are any issues with any of the parts or mechs before placing big parts orders once demand is known.