Thoughts on including this? (or something like it?)

https://mods.factorio.com/mod/Rocket-Silo-Construction

This is a nice and flavorful mod, but might not be included for similar reasons to why rocket control units are not included in Space Age.

Could you elaborate? :)

My thought is it further ensures that you "commit" to each planet before trivializing things with massive inter-planetary logistics.

I think its a good idea to add rocket silo construction to the mod pack. Rocket control units being removed was a good idea as you end up launching tens of thousands of rockets. You dont build hundreds of silos, and even if you do the combined cost will be less then the tens of thousands of rocket control units. Over all the construction of a silo will mean you really want that silo.