The easiest way I see would be the option to
quote selected text. But not so sure it would/could/should be added on the current SMF version.
I have been following a quite while about epochtalk, few users said it's done and technically we can migrated to the new forum software. However I don't really see there's a big demand to use epochtalk and leaving this forum since most users already familiar with bitcointalk, also the features itself. I'm not sure when will @theymos or @Cyrus will officially announce we need to move to epochtalk. I didn't mean to rush, but if we didn't try now, we might didn't move and epochtalk might be abandoned.