Re: Might brilliant.
Not entirely. Thunderbirds was conceived as a half-hour show and Anderson and team were halfway through production of the first series when their backer Lew 'Low' Grade decided the length should be doubled. Which helps explain why certain TB episodes slow to a crawl in the middle as they desperately splice in offcuts to fill up the time. (Let's have another long shot of the meter edging towards critical... now a close-up of a bead of perspiration on Alan's forehead and his eyebrows set to "Frown"... now back to the meter getting infinitesimally nearer critical... back to Alan...)
On the other hand it did give them space to build up the characters a bit more, which was where TB really scored over (half-hour) Captain Scarlet.