I kind of see where you are coming from here. But you must realise how difficult it is to develop a general storyline/premise for a game.
There is a definite point of balance one must reach between adding new content and brining a sense of continuity to a game.
In Geneforge 3, I would have liked the ending to be more original. The game kind of built itself upwith respect to plot suspense, but by the Isle of Spears, it just dropped off. Though it does make sense that they would construct a geneforge in a remote place, they don't seem to be doing anything novel with it. This game seems more like a transition story, necessarily bridging the gap between GF2 and GF4, but not in itself all that significant (storywise), except for the new interface, quick use spells/items, graphics, and the more challenging scripting (ie, on Dhonal's Isle, playing loyally, taking out the rogues in multiple areas with soldiers), etc.
I don't think the other forum users are snubbing you, but perhaps they are just a bit jaded.
They must have forgotten where to catch the really tasty flies.