Will there ever be an option to fully block someone, like you can do on Facebook? Is that a code that can be written into UBB Threads?

not really, because a 3rd party can quote the person on 'ignore' and you'd then see what they said

well, to qualify it... code could be written to FULLY ignore a person and it would be more along the lines of a non-standard feature.

outside of what would be deemed 'stock'

True-- you can't "quote" in facebook so when you block someone, they can't see you and you cant' see them, anywhere on FB..

This feature would be nice, since there are people I want to ignore on a UBB Board and I can still see them on the board.

Of course, making the quoted text invisible is an option too , but it'd have to be directly quoted. Copy/pasted quotes would still show up.