For years I am watching Haiku's progress and shaping. I do this rather distantly, maybe because is not easy for me to follow some really strange discussions in English language, often targeting very far topics like linux, strange development languages etc..
It could give new motivation for me and others to develop within Haiku, if (best inside a beta release):
a) officially recommend one stable development environment: a kind of an IDE, modern compiler and library
b) officially recommend C++ as the best supported Haiku development language
c) enhance Haiku public relations by announcing Haiku to be a performant, stable and free C++ development platform
d) have a yearly programmers competition to win a relevant amount of money from the raised Haiku programmers' fund for writing a genuine Haiku application