You mean before the patch is released, right?
First thing I thought when reading these notes, life sure will be harder for f2p players. I guess that's the only reason for awarding more gold for larger parties, I'm not really sure why they should do so otherwise (it's actually harder to beat most scenarios with just one character, although to be fair most of the times it will be shorter.... if you can, that is).
Actually I find if extremely easy to solo Legendary difficulty with Merisiel, not to mention how fast it is and I only started few weeks ago.