I think most characters' prime directive is finding a cure to the tadpole in our head
Personaly i see this as one of main problems ...
Right now we have 5 companions of wich 3 are woting for Halsin (yes i know Shadow seems to be voting for every option Gut included ... but you can easily find out that Gut is a deadend before you join any side definietly) ... 1 for goblins ... and 1 for screwing them both and go elsewhere entirely.
That alone create conciderable pressure on both Tav and player to follow this patch. :-/
if you want to make the evil path more compelling, draw more, and more clear, lines between how they might be able to provide that.
Disagree ...
I mean the Evil path isnt and is not suppose to be "you scratch my back il scratch yours" ... its more like "i shall pretend that im scratching your back but i shall stab you there once i get opourtunity."
And that seems fitting to me. :-/
I also honestly kinda like that its not made clearer ... it seems more like a path for player who thinks "what if..."
On the other hand since all Goblin leaders are threating you like a member of their tribe from the start ... i cant imagine how to make existence of that option clearer. :-/
Also currently aligning yourself with the goblins requires, without some metagaming anyway, turning down your first clear lead (Halsin) and taking for granted that you're loyalty to the people responsible for your plight will reward you for siding with them, this in the context of having been implanted with a mind controlling brain parasite.
I dont think this must be your first nor clear lead ...
I mean if you dont talk with Zevlor about searching for healer ... OR you will talk with Wyll afterwards ... you know that your first lead is false anyway. You could then easily come to conclusion that Druids are dead end ...
Then you talk to Sazza ... and you get alternative, even Shadowheart approves ...
Then you get to the Goblin camp and you find out that this group have much more interesting options than just healing.

I dont think you need to believe that they will reward you ...
If there is any potential reward you simply take it once the opourtunity reveal itself.
I've spoken a little bit about this, how choosing to help the grove doesn't mean you're good, because it still makes sense for a self-interested characters. This whole grove/goblin conflict should only interest good characters, people interested in intervening for the sake of others, for evil characters your questions about power and strength would presumably be secondary to your own self-preservation.
Agreed.
Also this whole good/evil is too limiting.
Edit: I saw this mentioned somewhere, but making us able to side with the goblins in the first fight would also be a serious improvement. Is that possible?
Honestly i fail to imagine some way that would not feel forced.
Do you have anythin specific in mind?