As most of you who are familiar with the CAP know that Objects Merge into ledges and Misc terrain also merges into objects. For instance you can take a wooden piece of stairs and merge a wooden catwalk stair to double your stair count.
Ok now lets take the example of building your park high in the ground. By doing this you can adjust the height of ramps to the scale you desire. However the problem with that is that you wouldnt be able to adjust the ledges ( which merge into objects, and are used for hubbas ). Here is a solution... Use the second floor of the HQ and being that the floor is already elevated you can adjust the height of your ramps while still being able to merge a ledge into it and adjusting the ledge as well to the scale you would like. With this feature it opens up more possibilities for new obsticals you just have to play around and create them. Here are some pics and a clip to better explain what I mean.
Clip : http://skate.ea.com/user/gallery?per...&platform=xbox
This is not a solution to the non merging capability however its just something different...... Enjoy creating some new objects...