Please read the posts below as they refer to a work in progress.
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After Spending literally days on this i finally figured out how to control the iconbank positioning without loosing too many features..
First of all. Yes the iconbank is hardcoded to position itself. but there seems to be a hierarchy of how it positions itself.
First off it will position itself exactly underneath the Bottom of the Heroic/epic/weak/average pages.
If that fails it seems to place itself directly under yoru target description. (ie level 54 blabla)
should that fail it seems to place itself directly under the end of your health bar. (healthbar window in ui builder).
Using this info i theorize that you can place your Iconbank almost anywhere. but there are a few things you will need to do this
First off start work with v1, make every element under the v1 page same height and same vertical position. place them next to eachother horizontally to help you keep track. making them each in size 5x5 would be functional.
Now hide each of these frames, and make sure that any graphics that would show have been hidden as well.
Once this is done. Copy V1 and rename it v0. (deleting the original V0.)
at this point they are both alike. you can now go in and delete the weak/average/heroic/epic pages from v0.
now. as you move v1 and v0 around. (these windows themselves may now be resized to almost nothing and most lilkey should be) you will see (ingame) that the iconbank should stay static now matter what you throw at it.
If you want the weak/average/heroic/epic to function as berfore. i theorize again. that you should be able to copy the originals, placeing them within the main page, (ie Target/impliedtarget). then go into v1 and change and give each subpage an "onshow" and "onhide" reference to the pages in the main page.
Also your helthbars, names, percentages etc can already reside quite comfortably outside the v1/v0 nestings, so there should be no problems there.
I will post an example if asked for. right now i have to go test my own theory
Good luck all! i hope this helps someone!