I'm not so sure I feel to strongly about re-surrecting old hifi. Whilst I went on about how good some MS20iPearls are in another thread earlier today, they, like most older hifi, can be either matched or improved upon with current products. You may have to pay more for the same performance but there's a wealth of stuff out there. If you'd say older/used hifi can be a bargain today, I totally agree, but only for that reason. Were it made today, that price/performance advantage may disappear when compared to modern products. As always, my opinion only.
What I can say though is that I'd like to see Castle return as a manufacturer and I did have a penchant for Pioneers 'stable platter' disc mechanisms.