thank you very much, for giving attention to my issues again

1. Yes. There are two possible solutions. Keep it visible or set its value to "false". Depends on your style concept. Should it be possible to get some style properties from parent style and other style properties from component style (can be steered with AllowUse*** flag)? If yes, then keep it visible. Otherwise hide the property and set its value to false. My favourite would be to allow the combination of parent and component style. So, for example, you can define one style for the databand font and a further style with a special text brush for some fields of this band.
2.Yes.
3. Yes.
I have tested these issues today again with latest version (2016.1.26).
Many Thanks & Regards,
Matthias