That pack is the season's price pack as far as I can tell. Season 11 had a special Jotums and the Ye Mao ML. It doesn't seem to say it'll be part of the pack, either, but have a shared release date. Keep in mind that it takes more than one person to play this game, if you scale it up to a tournament it'll take 6+ of which one person will likely decide what missions to play. If you add mandatory extras to the official mission roster, you also add peer pressure to play with these extras if your Warcor/TO/WarcorTO feels like it'd be fun organising it. Typically these are social events and not a commercial transaction so simply saying "you don't have to if you don't want" is simplifying a rather complex situation significantly - a primary reason why I dislike unique temporary units that each player can't quite be expected to have. It has a (17-8)/20 to hit the AC2, so 45%. Okay, fair enough, I agree it won't make the mission balance worse.