Thanks for Reply…
maybe more suggestions coming in - particulary on the Application developing front 
Windows i was using with VB6 - but just as a frontend for my in multiple languages written DLLs and COMponents.
So my personal choice is - staying with WIN32 or doing something else.
WIN64 is not adressing 32bit DLLs correctly … and many other probs
My anger on this is too big …that i never will rewrite an application on windows.
If i will rewrite for a 64bit promising future platform, then just a slim desktop platform
… and well …viewing YAB without knowing too much what it is doing:
Interpreter BASIC for me is much too slow. I need something to make “QuickandDirty”-GUIs…but if there is no “middleware” concept implemented… i mean at least something like DLL (Dynamic LINK LIBARY), then it will not work for me.
I am writing critical algos in C/Assembler/FORTRAN etc. - whatever. Basic i just need to have an useability for my own code on GUI-Level and fast access to the OS-API
Because i actually dont know too much about HailkuOS - but for me it is a MUSTHAVE for decisionmaking for even trying it out for a minute in my life:
Is there a LINK-Libary concept in YAB ? .,. and what is the main concept in Haiku for Libararies written in multiple languages ? … Is there something like Dynamic Link Libary in Haiku … or better: Component Object Model ?
If i am not able protecting my personal knowledge on a computer … i simple will write a book and not a software <3