Now I guess I should make a "Exeter Act 4 TIME TUNNEL" teaser.
FUTURE GARROVICK (to GARROVICK PRIME): "Another thing, make sure you get the damn coverage!"
Actually, as I've said before, another part of the slow production is the sheer volume of effects shots in Act 4, and how elaborate they are. Most of what appears in TTI through Act 3 are effects relatively simple effects compared to the insanity of "weirdspace" as created by the Tholian device.
P.S. Dennis, I'm still waiting on that shot I sent you the mockup for.