Continuing my exploration of feeding back points into themselves, i got my points stuck together (FeedbackList.vuo). It seems like the culprit is the "Hold" node not quite coping with holding different streams of data within a build list node (FeedbackList.vuo). So for a solution, holding the entire list of points, picking out the one corresponding to the point being calculated, and then... no feedback.
The FeedbackHoldList2 is where I've gotten until now, but it still seems like it's only using the point from the Perlin noise instead of applying it as velocity in a feedback loop (shouldn't oscillate if feeding back into itself). There is also some weird behavior when cutting the list. Then all the points gather somewhat to one point, although that node shouldn't do anything else than removing the points in the list that exceeds the size (this is needed to adjust the list back to only the points you want if shrinking the list).
So now I'm a bit stumped. Is it a bug, is it me doing stuff the wrong way (again), or is it just not possible at this time? Have a look if you feel for it (the limitToSceen has to go in your user modules folder), and shout out if you see a glaring mistake. I'll go drown my sorrows now.