Benny,
thank you for your valuable insights.
Your remarks about WDJ and Open Source are understandable since the inside of WDJ is still Java 1.4 including excessive code generation and your opinion that it is too late now is true.
SAPUI5 / HTML5 / jQuery based UI: Where does a "lightweight application" end and a "heavily transactional application" start? Of course, development of complex screens in Java script is hard work and the programming model is different (getting more similar to client-server-applications), but the BPM Inbox, albeit slightly "beta", looks promising.
Tools will develop and we will get into practice.
P.S: Tools are based on Eclipse... please keep in close touch to the Eclipse train and start to develop plugins, not standalone applications. Eclipse 3.5.2 below NWDS will be almost eleven years old on 31.12.2020 and NWDS will be the only app on (completely unsupported) Eclipse 3.5.2 on the planet then.
Regards
Rolf