Kodachrome wasn't universally the first choice for printing to Ilfochrome. For a vast majority of photographers, certainly those here in Australia, Velvia and Provia and every format you can think of, led the way for a very long time – those films and the media combination provided the rich colour saturation that normal RA4 printing could never come close to. Kodachrome was, however, preferenced by printers if scenes were heavy with red. Velvia didn't quite nail the red channel, and so Kodachrome was often recommended to photography where the scene is red-heavy.
After the demise of IC, I pivoted to RA4 Kodak Endura Professional metallic. Alas, that too went the way of the dinosaurs in '23, as RA4 print machinery is also doing going forward (no parts = no repairs).
Pivoted, again, to giclée, trying out several finishes from myriad suppliers. None have the smack-you-down high gloss finish of Kodak's Endura Prof. metallic (not even near Ilfochrome Classic), but rather a low, smooth sheen. I am not as happy with today's printing as I was in the time of Ilfochrome.
The Great Yellow Father has absolutely no interest in the reincarnation of Kodachrome. Ever. Same with Ilfochrome Classic. Never. The 'Bring Back Kodachrome!' mantra must surely be up there with the Les Misérables song, 'Do you hear the people sing?' !
Most of us are now printing to giclée, while some with their own darkrooms switched solely to B&W. Others too, are content with their own home-brew RA4 prints. We do not have a lot of truly spectacular options today.