Less money in later stages. Several common enemies in stages 2 and 4 (and their Hard mode versions) dropped a big cash pickup on every kill. Later stages now pay out closer to stage 1. Golden treasure enemies still pay out big.
Fixes
Mutant King, Bio King and the Oppressorbot now drop their upgrade disk or drone even with fancy effects turned off.
The daemon loadout no longer shows Jones-only daemons (Burning Chrome, Hydraulic Enzyme, Overkill Alpha, Reflexive Parry) to other characters. They had no effect for anyone else and only used up RAM.
Visuals
Steam vents now fill whole areas instead of thin fixed columns. Rows of small vents in stage 1 became wide steam fields, and stage 2 gets new ones.
Steam is a softer, see-through haze instead of solid white clouds.