In reply to bowls:
> My point was they are pretty much roadside, certainly Steal is.
It's low-level, but by no means roadside.
> The technical grade reflects that they are difficult
There's no separate tech grade for Steall because it's a lower-grade route and not particularly difficult.
> I would have thought the other grade would relate more to location/relative situation/seriousness committing to a climb.
As already explained by TobyA, you're misunderstanding the system.
> So in my mind their seriousness grade should be higher than any roadside icefall no matter how technically difficult that roadside icefall should be.
The overall grade isn't just a 'seriousness' grade, but relates to general difficulty as well.