You should have read my posts instead of reading into them. My post about the USB clearly stated that other options would be available to me above and beyond the simple IDE interface.
And since USB can be used for things other than just cards, I might infer as a reader that the NTFS driver would be useful for those other purposes: hard drives, flash drives, and whatever. Especially since I never said that I would be formatting CF cards in NTFS, nor did I directly state that I would be using CF cards for file transport. Again, smb-mount (or smb-connect, rather) is utilized for that purpose. The CF interface was intended to be a carriage between my 4000 and 1200 system.
Personally, I do format all of my external devices with NTFS due to the increased reliability and security over FAT/FAT32. Cards are a different story, since portable devices cannot do NTFS, at least none of which I am aware. My Cannon camera and Palm LifeDrive do FAT and FAT32 on an SD, and my SE K790a does FAT32 on an M2.
So having said that, I believe it to be a realistic expectation to acquire a USB interface for my 4000D, install a multi-card reader as a replacement for the Zip drive currently in the 3.5" bay, and also provide myself with the flexibility of USB keyboard and mouse, flash drives, and external hard drives. Maybe even a USB scanner. If supported, perhaps USB-to-SCSI and my ScanJet 3c.
In any case, I think the simple answer to my original question is "No hot-swap IDE for CF." Given that, I can go USB and find much more functionality than for what I had originally aimed. Reasonable, realistic, and rational.