Pretend for a moment that you're one of those fortunate souls that was born
left handed.  Yes, you can console yourself with the fact that you are
naturally more intelligent, handsome, and just generally superior to
your right handed brethren, but sometimes that's not enough.  Sometimes you
yearn for a filletster that allows you to hold it the way God intended.
You search high and low, but your search is fruitless.  You decide to make
your own.  You procure a set of skew floats from some dudes in Arkansas
and sign up for a class with a guy in Indiana.  Now all you need is a design.

You decide to incorporate the best features into this plane, but lacking
experience with filletsters (since they are all made backwards, you've avoided
using them) you turn to the soiled masses for advice.

What makes the perfect filletster?

 Fence:
    - wedge arm?
    - fence attached to bottom with screws?
    - bridle style?
    - screw arm (never heard of one of these in a filletster)?

 Depth stop:
    - simple slotted stop screwed into side of plane (ala Stanley #78)?
    - screw stop mortised into the plane (see fig. 5:16 of Whelan's book)?
    - some other arrangement?

 Knicker:
    - dovetailed?
    - held with a wedge?

 Boxing:
    - full?
    - just the corner?

How about the width of the plane?  Is there a width you find particularly
handy?

Other things you love about your favorite filletster?