The Jargon File (version 4.4.7, 29 Dec 2003):

creeping featuritis
 /kree'ping fee'?chr?i:`t@s/, n.

    Variant of creeping featurism, with its own spoonerization: feeping
    creaturitis. Some people like to reserve this form for the disease as it
    actually manifests in software or hardware, as opposed to the lurking
    general tendency in designers' minds. (After all, -ism means ?condition? or
    ?pursuit of?, whereas -itis usually means ?inflammation of?.)


The Free On-line Dictionary of Computing (30 December 2018):

creeping featuritis

    /kree'ping fee'-chr-i:`t*s/ A variant of creeping
   featurism, with its own spoonerism: "feeping creaturitis".
   Some people like to reserve this form for the disease as it
   actually manifests in software or hardware, as opposed to
   the lurking general tendency in designers' minds.  -ism means
   "condition" or "pursuit of", whereas -itis usually means
   "inflammation of".

   [Jargon File]

   (1997-08-03)