Customized nickname instead of username

[Fredy]

Well, it seems so far that it is almost everywhere. In quoting post there is real username, i hope this can be changed through some hook.

What different approach you would take please ? As i said, there isn't enough hooks to cover whole mybb without modifying original code. One way could be creating array in cache with pair username->nickname a replacing it in output, but i'm afraid of losing performance, because number of users will be big.