You're upset about the lack of Dyna, when we're getting TWO Tiga and Cosmos episodes, practically back to back, shunning the ENTIRE rest of the franchise? SOme of which wasn't even brought up in the opening episode?
Tsuburaya has a great track record with getting original actors back and he's already appeared as Dyna twice recently. We've only JUST gotten information on Saga within the past couple of weeks so of course we don't have any stars announced. That's how these things work and you, sir, are just being obnoxiously impatient. Cool it, please.