PT road to be taken?

You sound like you're too used on samples. A real piano never has each key sounding "in distinctive encasement and playing from its own personal space", they all use the same soundboard! So your approach to this is fundamentally flawed, as real piano doesn't work that way!

You are asking if Pianoteq would be able to behave like samples do. I, for one, loathe upon even the thought of it!

to clarify when i was saying encasement i was talking about all the note keys not each having its on encasement but just that there is a distinction between notes. you can tell me that when you hit keys on the real thing each note does not have its on placement because it does and it sounds distinct based on its position on the soundboard among the tuning and hammers etc. but yes they sound connected as they should. Im not stuck on samples at all I love PT i record with PT every since i got it because it sounds like a real instr. and not a sample. Im not hardly going to use anything else except for the real thing in the studio...  but it is muddier because of the nature of the instr. your kidding yourself if you say chords mixed with individually struck notes dont sound too much like parts of one whole polyphonic tone. you its basically imho a soundboard issue it doesnt generate specific tones as much as it resonates specific tones and when you add resonates it just sounds like sounds that lack proper clear attack and silent noise floor threshold