I mean, for the past two tenures that Six Flags has done, they have added a new coaster to Magic Mountain. Plus, there have always been the one rumor or two of Six Flags wanting to invest heavily on 2021 for Magic Mountain.
2001 - X, Deja Vu, Golitath Jr.
2011 - Escape from Krypton, Road Runner, Green Lantern
....still, this is Six Flags we're talking about. Ya kbow, the company that hasn't opened a B&M or Intamin in a decade, and the company who has made a killing off of super loops and free spins?
A giga isn't happening until Six Flags goes under new management.