It is common to have lambda functions with one argument for things like map, filter, find, etc.  
I think could be usefull a macro that do something like (fn->  :value inc  (> 1)) which would be equivalent of   #(-> % :value inc  (> 1))
Something like  
(defmacro fn->
  [& forms]
  `(fn [x#] (-> x# ~@forms)))
(defmacro fn->>
  [& forms]
  `(fn [x#] (->> x# ~@forms)))
I see this a very useful for readability if in the core library. wdyt?