Before anyone starts barking down my alley, please take note of this first.
1. I am NOT asking for nerfs for particular builds or anything.
2. This is rather seen as a way to encourage solo players to use Henchman / Heroes in the event they wish to do their own farming with other types of characters/builds, rather just just rely on certain specific builds.
Here is how it works.
Allow players who had reached Level 20s, to be able to "buy out" Henchmens/Heroes literally so to speak.
This means say you pay 10 platinum, the 1st henchmen/hero npc's drops instead goes to you.
Say this. Before "buy out", a 2 party with 1 npc, splits half gold and allocated loot, after an npc is "bought out", all his items instead go to the player instead.
To make it fair, every additional npc "buy out" up to the maximum 8, increases by another 10 platinum per npc, so a player would have to save ALOT of money inorder to achieve a total buyout.
This can post new challenges and priorities for solo players, say whether to concentrate on "buying out" npcs, to sacrifice present gains for future worth.
It can also open up a new title track: "Capitalistic Instincts".
This way, solo builds STILL work, and is probably the way to go in the short term, but with what i suggest, players can be encouraged to try more creative or unusual weaker builds to perform farming functions in the long term, which is actually kind of fair to those who do not just want to relay on specific builds.
Cheers.
M

