I think the original series was very ground breaking in it's time.
There's enough basic "good guys Vs bad guys" stuff going on to entice the standard viewer.
There's also a much deeper side to it in terms of it's philosophy & suggestion that we're all aliens!
Considering it was made 30 years ago, it still seems so fresh now I find it hard to believe.
I think it's such a shame it was not continued with at the time. I feel the series would've gone on to even more breathtaking stories.
War of the Gods & The Living Legend are absolute classics... I think it would've been amazing to see what they'd have done next!