I appreciate that some people may want to live the dreams they had many years ago, nothing wrong with that. Nevertheless, I would agree with few posts here that things have improved with advancement in technology, research and development. The materials used in the manufacture may be different as well, improved with years or research and development. While it may be true that most old speaker or amplifier designs from 10 or 20 years ago can sound very good, improvements or refinement are still possible.
It is also useful to note that there are wear and tear parts or materials in loudspeakers that may show deterioration with age and require replacement in appropriate time. This would be dependent on the parts or materials used to build the speakers. Case in point, the internal foam in my B&W CDM 1SE speakers decayed after 10 years and I got them replaced after bits and pieces of these foam flew out from the front port of the speaker and landed all over on the floor when music was playing.
Having said the above, a caveat. New gear is usually associated with new improved sound in most cases. However, this may not be necessarily true as certain new gear produced by manufacturers may sound less desirable or worse than its predecessor. Perhaps personal preferences may play a part here, I’ve read about some people preferring an older speaker or amplifier and thought that the newer iterations sound considerably worse.
Just go with your heart. It’s useful to note that Magico are still able to service the Mini 2 and provide the parts for it in the event a replacement is required.