Handicapping the Bishops...which are a very good lot...
Diagonal Bypasser is not quite as fearsome as it looks; it must move at
least three squares to capture anything. (Does it capture friendly pieces
as well?)
Roc is sound, and incorporates the Camel's traditional move. But it is
perhaps more tame than some other choices.
Hopping Bishop is another reasonable colorbound piece, somewhat stronger
than a straight Bishop.
Bishop + Lame Camel has theme going for it, if the voters buy the 'Camel
Chess needs a Camel' theory.
Dualist Monk has a few too many rules for my taste.
Chaplain has not quite so many rules. Since our Pawns (the Eaglets) do
not promote, having a 'Bishop' that can is of interest, especially if a
relatively strong 'Rook' joins the Tower of Hanoi and the Mule.
Sliding Bishop is an elegant way to let the Bishops change colors, if that
is desired.
Crooked Picket is a zigzag piece, which I confess to not liking much on a
personal level. Yet it could fit this game.
I lean toward Chaplain, Diagonal Bypasser, Sliding Bishop, Roc, B + Lame
Camel, but am listening to persuasion attempts.