In article , wclarkso@lonestar.jpl.utsa.edu says...
>If you improve it, send me your idea.

I hope you include a fuse - a shorted battery is NASTY. I made my own
pack (before I didn't need one with Nikon SB-24 and NiCads) and a cord
that should NOT have shorted under any reasonable condition, did.
Also, putting two 1 ohm 10 watt resistors in parallel, then in line,
will save some flashes from going up in smoke (or worse) if you are
using a battery capably of delivering high current (the small resistor
limits current at the beginning of recycle when the flash impedence
is VERY low.
Hope this helps.