The first Sony VCR to lose discrete inputs was last years SLVN51.
I'd assumed a new/different vender made the entry level N51 for Sony, but it sounds likes it's spreading up the line.
They also went completely ass-backwards this year as far as several of their A/V receiver discretes go.
When spec'ing any new Sony models lately, I don't assume any of the "standard" Sony discretes work on any particular model until we've bench tested it.