It also means changing every single fight by either increasing the number of enemies you fight or increasing their HP pools/number of abilities to keep the same difficulty. So yes your party does more damage but the enemies would as well do more as well as soak more. Net effect is longer combats with more turns total as i said. It sounds like you have never developed/balanced games so ill let it slide
Not to mention this late in development if they have been balancing every encounter for a party of 4 then suddenly changing to six is not going to happen.
Says who, exactly?
Personaly i would be totally cool with option to have 6 members party without any futher adjustment, or reballance ... After all, Larian specificly told us that they expect some modder to create 6member party mod if they dont ... and while there probably will be someone so dedicated to the cause, so he would go through every game aspect to reballance it ... first mods will be just "Maximum party members set to 6" (instad of 4) ...
So ... Give me sign, that by taking another two followers i ruin combat ballance with button "I either accept or never cared in the first place" And im totally happy. :P
If my comments bother you, there is nothing easier than telling me to stop. I mean ... I won't ... but it's easy to say.