Customization of ValueProperty type

Hello,

I create a stereotype <> based on the ValueProperty and added a tag definition "test" with an enumeration type. I also achieved to add a menu to select the value of test to the shortcut Menu. 

I would like to optimize this further.

  1. Is it possible to show the value of test (a,b,c) for the CTP types at the shap of the blocks owning them? (Somewhere within the red box). I can achieve something like this by using stereotypes instead of a tag definition but prefer to use the tag
     

  2. There are many other option in the shortcut menu I don't need. Is there any way to remove the not needed one (e.g. Is Read Only) I did not find this setting at the perspective

Thanks,
Jens