I can't find the thread and maybe it was on reddit but someone made a pretty solid info chart about all the stuff you lose, future interactions and possibilities mainly, if you start killing your way to "victory".
Are you perhaps thinking of this
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=828579#Post828579 ?
I do (still) think that there's really good potential in exploring the option of siding with Minthara at the expense of the grove, either genuinely, eg because you see it as a path to power, or deceptively, in order to infiltrate and stop the cult either for your own benefit or because of character backstory. And that thinking of that as necessarily an "evil path" is not particularly helpful. Of course, an evil character might do it, but they might equally prioritise their self interest and think Halsin was a better bet to cure them. And while a neutral (or even at a push good) character who took the path would have to have a certain disregard for collateral damage and a strong stomach to side with Minthara, it's feasible - or should be - that they think they could do more good in the long run by getting into the good books of the cult.
At the moment, of course, it's not at all fleshed out and doesn't feel particularly satisfying, as was discussed in the thread linked above. But I do really hope Larian will invest some time and effort on the potentially quite different path through the game offered by siding with Minthara, including making the choice feel more compelling at the start by bringing to life the different motivations a character might have for pursuing it.
