Thanks for your time in the succinct reply.
They all work, you just need mass and height given a surplus of renewable power from any source. Last I checked we have junkyards filled with oxidizing metal that could be put to "potential" work as mass, not to mention all the other precious metals which could be reclaimed as people seem to forget we pulled them from the ground to begin with. Height is accomplished using the same materials salvaged from the junkyards to be used as structure in a different remanufactured form. Hopefully gravity doesn't change because then all of this is meaningless anyway. Efficiency doesn't really matter because nothing I am aware of is 100% efficient in energy and if the source is renewable then the loss is always made up in time, something people have no patience for today it seems. The CAPEX cost may be high but with correct design the OPEX cost will be low and functional unit lifetime correlates to the specific lift/generation device and that is where your simplicity reference is key.
It always comes back around to cost but when the power goes out what are people willing to pay? I have contacts that lived through the Winter Texas outage and the stories impact deeply and it of course will not happen again. Oh wait, last week 6 plants totaling 2.6 GW went offline from the spike based on May heat and certainly June, July and August will be cooler. And what about all of those devices that require electricity to keep various mammals alive, humans included?
My experiences reflect that few people on this planet are proactive, I can only hope those with crazy ideas working toward the energy problem find the needed traction in proving solutions that work to our global energy issues. If we do not solve the energy issue in a clean manner we are certain to be unable to solve the carbon issue which will need that very energy to return all the carbon we have already released and more.
Your assertion of simplicity is correct and this is the best outcome I can hope for. I'll shoot for one, maybe two but whatever the outcome, simplicity will always be top of mind. I am no expert by any means yet thanks again for the motivating feedback.