True but most armies have good Heavy Support Choices. Dark Eldar could take 3 ravagers and 3 void ravens/razorwings at 1500pts for example. Eldar could take three fire prisms and three falcons (not at 1500p though, stupid overcosted old codex) and I'm sure most other armies have a couple of viable HS choices. Peraps not Tyranids or Tau but Tau at least will be getting a new book soon.