Mission Creep - Was Re: The new US Army APC the Stinger

It seems that mission creep is commonly found in big budget projects -
Cheyenne helicopter, International Space Station, etc.	Is there a way
to simulate this in a GZG-verse campaign game?	

For instance, if the form of government of a planet/country/political
entity allows nepotism or just plain pork-barrel politics how would you
factor in the procurement of extra units, above and beyond what the
military requests? i.e. you get 8 battlecruisers instead of the 6
requested, but the military has to pay for those extra 2 because a
senator/bigwig decides the shipyard owned by one of his constituents
needs the extra work.  

Or alternatively a specific modification is designed for tanks to be
used in the combat engineering role.  It happens that the refit can only
be done at the factory.  Instead of only refitting tanks going to the
engineering batallions, a bigwig decides that all the tanks need to be
refitted "just in case". It also happens that said factory employs his
nephews.

A third case might be a space transport unit that halfway through the
design process acquires more armor to make it a limited assault
transport.  But this reduces the top thrust from the original
specification.	Do you up the engines or accept the decreased thrust?

In the first case, would there be minimum procurement amounts?	For
instance if you commission a new class of cruiser, would you have to
commit to 20 hulls built in a 10 year period?  Or would you have to buy
tanks in 1000 unit lots?

In the second case, are there provisions for a unit that is designed one
way to have a flaw so that it doesn't meet the original specification
and requires a refit to bring it up to specification?

In the third case what do the design changes cost?  In real life it
costs a lot of time, effort and money to make major design changes,
especially as you get further along in development.  If lead times are
years, should there be an additional cost to make modifications to the
design?  On another related thread, if you design multi-function
modules, do they always work as specified or do they have more teething
problems than dedicated systems and/or higher maintenance costs?  

Some ideas,

--Binhan