Cache a group of addressable in memory

OK the title doens't convey what I am actually going to ask, so bear with me:

I am looking for a solution to keep groups or addressable in memory between runs in the editor, in such a way that each run won't be slowed by the loading of the addressable themselves. Loading over and over the same data is a waste. Advices on how to achieve this? I have already some ideas, but I am bewildered that no one feels this need.

Edit: we found out that actually most of the time was spent on GO->ECS conversion rather than asset serialization, so I guess once we optimize all the rest, actually this would be really quick