Nice.I am considering a frantabit. Current pedels, in order, on the board include:
Subterranea
Holding place for oxide
Xerograph Deluxe
Cali76
Polytope
Nimbus
Micro thump.
Depends on how you might set your Oxide (ie. Sustaining - vs - Gated)
I would pop the Bit crusher after any sustaining effects you like at the front of the chain, cos like has been said already, having some sustain before it definitely helps to keep those low bitrate tones useful.
I use the WMD Geiger Counter. Its good for heaps of very convincing fuzzy and OD tones aswell as the normal nuclear explosions.
EDIT: How useful you'll find a bit crusher will depend on how flexible it is > fuzz/drive sounds etc.