new updates in transports or are they obsolete ?

Your average music lover listens to CDs either as ripped computer files (probably data compressed) or using a multi disc DVD/CD player. Because of this manufacturers have really scaled back on the production of single disc CD player mechanisms. Very few audiophile oriented companies have the resources to design and build a CD transport from scratch and that's why you see so few dedicated transports. It's also impacting single disc CD players.

If you were setting up a hard drive system you should use dedicated hard drives for the music file storage. You'd start with a clean drive and fill it up by ripping CDs one at a time. Under this scenario fragmentation would never become an issue. Even if you didn't have a dedicated music storage drive playing back two channels of red book quality audio is a fairly trivial task for any 7,200 rpm hard drive. Fragmentation just isn't a real world issue for consumer type audio playback.