I echo both Jake's response and also a previous poster who 
suggested a 'portable apps' type of package, possibly similar to 
what Art Hunkins mentioned.  For my own part, I don't need 
real-time capability, but I do like using MIDI files to play my 
orcs, at least as a basis for experimenting.
Csound is so huge, with so many different synthesis methods 
available, and so very many opcodes that have been added for 
very specific reasons, that it is almost overwhelming.  I'd like 
to see a cut down version that includes all the materials needed 
to use the Csound book and catalog examples, that is free from 
the bugs that were eliminated as that basic early version 
developed to what we have now.
It should be able to compile orc/sco pairs, and also csd's.  For 
me, the only gui I need is one like is currently available with 
csound 5.xx, although I do use winxound.net, too.  Graphical 
table editors are nice, but unnecessary, as are widgets and 
interfaces like Lettuce, etc.  Besides, I kinda like the idea of 
modular systems, that I can pick and choose from, rather than 
monolithic 'does it all' systems.
I'd really like to have the time to learn how to 'roll my own' 
set-up, but unfortunately that's beyond me at this point.  So, 
to reiterate, a cut-down, basic, portable system would be good 
for me.  (Of course, I'll keep using the big install too.)
Thank you
Bob Foose