疯狂的 "crazy" meaning "unconventional"?
Yes the terms 疯狂的(adv/adj); 疯狂(adj/adv); 狂(adj/adv) has other connotations beside being mentally ill.


  recklessly / beyond imagination / out of the word (unrealistic)
  
  Example: 
  
  疯狂的计划 / 疯狂计划 (crazy plan; reckless plan ; plan beyond imagination  )


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  uncontrollably / earnestly / enthusiastically
  
  Example: 
  
  疯狂地殴打 / 狂殴 ( crazily beat someone; uncontrollably beat someone)
  
  疯狂购物 / 狂购  (shop crazily ; shop uncontrollably; shop enthusiastically)


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  strange / weird 
  
  Example:
  
  疯狂科学家 (crazy scientist/ weird scientist)