diff --git a/Ideas.md b/Ideas.md
index 6f214d1..a13eb67 100644
--- a/Ideas.md
+++ b/Ideas.md
@@ -7,6 +7,7 @@ http://www.slideshare.net/steve8/what-id-like-to-do-with-mapnik-4756837
 3) move icon a bit if it would collide with others
 
 4) replace an already placed icon with a collection icon when there is another one to be shown right there
+ - unlikely to implement this, as it is better done as a (zoom dependent) pre-processing step before mapnik
 
 5) <strike>push lines apart so that there is a minimum distance between them</strike> (nearly done)
 
@@ -19,6 +20,7 @@ http://www.slideshare.net/steve8/what-id-like-to-do-with-mapnik-4756837
 9) stronger coupling between icon and text (maybe similar to the ShieldSymbolizer?) so that manual text dy tweaking is not required anymore (want to be able to say: "place this icon in size 20x20  and put the text in size 12pt five pixels below it") Idea: “TownSymbolizer”.
 
 10) collapsing of little small areas with the same tags into a single big one (for e.g. a big forest), so that e.g. the name is drawn only once
+ - unlikely to implement this, as it is better done as a (zoom dependent) pre-processing step before mapnik
 
 11) be able to suppress automatic text rotation (per style or layer) - contour lines should always be displayed so that the base line of the text points to the lower ground