@Donald Qualls I think the catch is, apart from wasted time that @Bormental mentioned, increased contrast and granularity, along with crossover. If you ever try to optically print this film, I'd expect it be impossible to have a reasonable colour balance. Assuming a negative with a gray-scale from black to white, you'd probably be able to balance the print for a specific patch and the rest becoming progressively worse the farther you go from it. Obviously, when scanning you'll have a chance to correct this issue, but it can still be too much of a chore.
Anyway, IMHO stand development is hugely overrated and problematic, even when used with BW film, let alone colour, but to each his own.
Anyway, IMHO stand development is hugely overrated and problematic, even when used with BW film, let alone colour, but to each his own.

) said: " I think it may surprised us all favourably as I can feel it in me bones." Aargh( West Country speak i.e. the British West Country) 
...the colors look excellent, nothing I can identify as crossover even when specifically looking for it, no significant cast (probably none at all, my scanner software doesn't have a film profile for Superia X-Tra 400 and certainly not for 10 years expired). Grain is no worse than I'm used to for this film in the same kind of light (i.e. dark areas get a little grainy if I try to use the brightness setting to pull the image up out of the dark).