Certainly it would be welcome if each biome had a wider selection of options, so that you didn't always get the same Marvels every time you roll a particular biome, but nothing will change the repetitiveness as long as every single Marvel quest is "Sit on one of X, then sit on X more".
At very least it gives a reason to explore rather than ignore the outside world, but more variety would be helpful.
Like if the Lush quest requiring capturing some nests and excavating X normal Alien skeletons.
I had several marvel ideas in
this thread, for what its worth.
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@x2Madda
Aliens would be an interesting mechanic if Firaxis actually made them matter.
If they made sending Explorers far afield without escort extremely dangerous, players would suddenly have incentive to build an early military if they want to expand and excavate.
Personally I'd greatly reduce how much combat strength increases with unit upgrades, focusing it more on perks, while also making the colossal Aliens less impossible to fight early on.
That way a Kraken could be a threat at all stages of the game, but one that can be dealt with given sufficient force.
Obviously a higher tech army would still trump a lower tech one, but I don't think it needs to be as absurd a difference as a Warrior against a Giant Death Robot at the poles.
Firaxis' decision to make the Aliens more or less ignorable while gathering artifacts, the fact that they never make coordinated attacks on cities when angered if not by accident, and that they fall off hopelessly all make them a far less interesting mechanic than they could be.