I fail to grasp what you want. We already have such reactors and these are functional, some are no longer functional but were built in the past. There are also plans to build more: https://en.wikipedia.org/wiki/Breeder_reactor
You know what also have, a proven technology that gets cheaper every year? That is easy and fast to deploy, in massive volume? One that actually is deployed, as we speak, in GW scale month after month after month? Solar.
Instead of building new nuclear reactorsy taking decades, we couod use the same money and research better storage tech, better gris tech, make industrail demand more flexible and sponsor heat pumps for domestic heating. Just a thought.
This seems pretty simple to me: please name a single model of breeder reactor ready for industrial deployment.
It is not about failed attempts (there were numerous, for sure) not vague plans. This is about an existing solution, and therefore an existing model of breeder reactor ready for deployment. If you cannot name one, well, there is no solution here.
They were built in the past as part of nuclear-weapons-oriented industry of the Cold War. Like many things about nuclear, taking away the need to build weapons changes a lot of the economics around them.
This (need for military-grade plutonium) is only part of the benefits of breeder reactors.
They lift most of the dependency towards uranium providers (needing way less of it), and considerably helps tackling the nuclear waste challenge (producing way less of waste, and less hot).
The challenge is technical: obtaining a satisfying industrial (big, predictable, not too expensive...) breeder isn't a solved problem.
There is none, therefore this is not a solution.