I can count the user styles that have compared favorably to the best ROM ones on the fingers of one hand... Unfortunately, as you point out, arranger sales are pretty flat in the USA, so expecting RolandUS to come out with a set of good styles for the American market is unlikely.

Fortunately, it's a walk in the perk to drop the reverb off the EU styles (actually, Roland came out with an update shortly after the G70 launch that revoiced the styles to be less wet - I think even the UK players thought they were too wet, too!) so it's not the kiss of death...

Another thing to take into account is that most people that have an arranger at home have it in an acoustically dead living room. So gobs of reverb helps open out the sound. But pros play in pretty large rooms, so the style doesn't need much. The room itself is providing some 'space'!