You expressed a point that's crazy and idealistic (7)
I believe the answer is:
utopian
'idealistic' is the definition.
('utopian' can be similar in meaning to 'idealistic')
'you expressed a point that's crazy' is the wordplay.
'expressed' indicates a 'sounds like' (homophone) clue.
'that's crazy' is an anagram indicator.
'you' is a homophone of 'u'.
'a'+'point'='apoint'
'apoint' is an anagram of 'topian'.
'u'+'topian'='UTOPIAN'
'and' is the link.
(Other definitions for utopian that I've seen before include "Of an ideal existence" , "Citizens of Thomas More's perfect country" , "Thomas More-ish?" , "Of supposed perfection" , "Perfect (state)" .)