I don't get the whole spaceship alien thing. My trips always reside in what you describe as "old world" imagery—like south-American-looking totem faces and arcitechture and patterns. Mind you, this is only symbolic of the past to us because we are arbitrarily attributing it to the people of the past who happen to have worked in the same aesthetic.
Maybe they did invent it, and we are seeing the past... or maybe we were all just tapping into something greater.
Regardless, my trips always felt beyond time... like I became aware of the whole of human existence through time, from the birth of life to now to forever. In such a mindset "past" and "future" are meaningless terms.
I don't want comfort. I want God, I want poetry, I want real danger, I want freedom, I want goodness. I want a clever signature.