Hey, how would I get the middle point between 3 and more vectors?

Add all of your vectors up, and divide the result by the total number of vectors.

In other words, take the average of your set of vectors.

edit:

[thread=1348923]the ‘Problems that don’t need their own thread’ thread[/thread]

Take 2 vectors, find the midpoint with a 0.5 vector lerp then do that again with the midpoint and the unused last vector :^)