It's vanilla 0 A.D only the recording is a custom patch. all the trailer videos maps are here https://github.com/0ADMods/trailer_tools

I just re-roll the match when I get one of the above or some other no/scarce wood maps. I think it would be nice if it were possible to create your own pool; for example start with all maps and then de-select those that suck/don't fit your play style.

It's something that's crossed my mind many times, almost every time I let the game choose a random map for me instead of choosing it myself... The truth is that there are certain types of maps where the strategic mechanics to follow are very different from the norm, so they should be considered as special challenges, I mean, those with extraordinary situations reserved for very expert players such as those I list below: - Survival of the strongest one (Honestly, I don't even know how to start playing on this map, I always quit out immediately); - Jebel Barkal (A nightmarish map, that gigantic Gaia fortress keeps throwing enemy hordes at everyone and is almost impossible even to survive); - Extinct volcano / Inundation (That/those map(s) where everything floods after almost half an hour and you have to rescue your entire civilization by riding in boats; the CPU is useless because it always dies, but you survive); - Polar sea (aka 'Eternal AOM Fimbulwinter', wolves and more wolves, not a trace of wood, just depending on the trade routes besieged by wolves, what a pain of a map, jeez!); - Pompeii (Perhaps the most standard of the previous ones, but it is excessively mountainous and there is almost no land on which to even build). That is, all these maps (and maybe some more that I'm forgetting) should be collected in a separate category within the game, somewhat like 'Special Challenges' or 'Expert Challenges', and thus being excluded from the standard random maps... What do you think? 

How did you guys do the moving camera in the trailers? It was cool how they moved. Could that feature be added in to normal 0 A.D.?

I think some designs are possible.