I'm in agreement that changing the efficiency of the Odyssey without a big increase in Capacity looks like a raw deal, for a ship that's already pretty weak.
I think Odyssey really should keep efficient shields, or have a System that replaces HEF and gives Energy Weapons significantly more range for a little while (3-5 seconds; long enough to trash lighter Frigates).
It would make up for the shields being gimped somewhat, since it could open the engagement by putting flux on the opponent (unless it's an Onslaught Burn Driving in). I think the Odyssey's main issues have always been that its effective firepower is terrible compared to almost anything else in its size class, and unlike the Conquest., it can't have a "strong side" to (kind of) make it work (in human hands, with luck and alpha). I like that it's more of a carrier now; that is sensible. But it needs more oomph, or it's just something we can ignore until we've killed the escorts, unlike the Paragon, where we pretty much need to stay awaaaaaaaay unless we're really, really really ready (which is a good dynamic- I like that it's that deadly now, lol).