remapping in rqt_plugins

edit

Is that possible? If I launch an rqt node with <remap/> tag that does not appear to work... Is it supposed to?

Update with respect to @Dirk Thomas Comment:

Basically, I wanted an image_viewer with a fixed topic (for later adding some fancy overlays and so on...). I took the rqt_image_view (indeed C++!) as start point removed the topic spinner and related functions and subscribed the image_transport from a fixed topic. Works perfectly if the "hard-coded" topic exists. However, I did not manage to remap the topic in a launch file.

So far i tried 2 things (Both work with "hard-coded" topic but not with remap):

1) Remapping in launch file using the phyton script for stand alone launching my_plugin:

#!/usr/bin/env python

import sys

from rqt_gui.main import Main

main = Main()
sys.exit(main.main(sys.argv, standalone='my_plugin'))

Launch file:

<launch>

  <node name="my_plugin" pkg="my_plugin" type="my_plugin" >  
    <remap from="/input_topic" to="/camera/image_raw"/>
  </node>

</launch>

2) Remapping for rqt_gui and load my_plugin into rqt_gui

<launch>

  <node name="rqt_gui" pkg="rqt_gui" type="rqt_gui" >  
    <remap from="/input_topic" to="/camera/image_raw"/>
  </node>

</launch>

Edit 28.08.2014: Anyone?