I'd like to find a combination in guildwars that would work similarly and take advantage of our ability to work well together. One thing I've considered are monks that use blood ritual to keep eachother going, and have one (or both) have a heal area - or maybe one could be a bonder (both still using blood ritual) - or one could use order of the vampire, etc, but both coordinate to keep the other going. Perhaps some infuse health, if both are using heal area and blood ritual? Or maybe they could just use heal party instead of heal area, then find some way to manage power. Or one could use martyr, and the other run restore condition?
You get the idea - I just don't have enough experience with this game yet (at least outside of competition arenas and lower tombs) to come up with something that would require alot of coordination.
And for us, alot of coordination is fun

So, any ideas?
