Zilch
with respect its very easy to critique "look n feel"/gui's etc
if one is an end user rather than a software engineer.
remember not everyone is installing 64 bit OS's.
lots of people still run prolly biab etc on older win OS's.
and therein lies the rub for a developer.
the developer doesnt want to force a new OS upgrade
(and added expense..) on the user base.
yes a lot of the new sample player software etc n sample libs
seem nice in theory. with lots of flashy gui's.
BUT , there is no free lunch. some of these apps are very large
and often require a investment in a new powerfull pc
to be effective. some of them are massive apps.
which puts me off frankly. cos my own experience
developing systems tells me that massive apps come with as big cost.

one can see the result today. viz people trying to do stuff
with big sample arrays that some puny laptops cant handle with
all the other recording and multitracking duties.

i too personally long for the day when i can incorporate in songs
any darn variation of an orchestral instrument i would like.
ie every instrument in an orchestra.
but i'm also a realist n realise the pc (and mac..) hardware technology
imho isnt there yet.
the day will certainly come when we have in our studios ultra powerfull
computers capable of doing everything we desire includeing
such sophisticated modelling of instruments it will be mind
boggling. but imho its gonna take further rounds of processor/memory/
storage technology developments.
until then midi still has its place imho.
cos midi traks place little load on a pc if running to external synths
or midi modules.
bottom line, we all want nirvana...but its gonna cost.
advanced computer hardware and software engineering/products dont come cheap.
and is outside the small budgets that most of us have.
big studios with big cash flows , different story.

retired puter engr....powertracks on amd......NICE !
"what is the black art of audio engineering ?"
my silly songs...motagator.com/bmanning
see my tips in the tips section.