I got my stuff working under all the aspects. Only i was searching for a better way to update parameters:
When I change parameters from Editor (aka: from Editor View) in my DAW all works well and parameters get notified, automation works too. When I make parameter changes from Control View (aka raw DAW editor window, not Cocoa based one) i cannot realise a way to "catch" when a parameter is moved. Due the fact timerCallback() is called *only* when Editor View has re-switched on (in Ableton Live also) i am not able to get notified when the user moves a control in the Control View. The solution was to set my Processing based upon the parameters i added with addParameter(), due the fact they are synced in realtime, but no clue to catch if only a certain parameter is changed (like I can do when user changes a control in Control View, aka Cocoa View). In Example, when a user changes the "attack" parameter, having its value ready for the processing code isn't enough: the envelope detector needs to be updated with the new attack value, too.
Further, I implemented a mapParameters() method that maps any parameter value (0 - 1) to my DSP's needs. I must recall this method at every renderBlock() call by now, should be safer to have an equivalent sliderValueChanged() method that would work also when user is in Control View and modifies values and calls custom code based on a specific control, when its value is changed.
Am I missing something?