Obviously everyone else is finding this mysteriously simple as no one has come up with anything so far.
I'm stuck on three :
32D - Line sound in detail with long pants (8, 4)
?I?L?I?S ???E
38D - Expert welcoming broadcaster, heretic not corresponding (2, 8)
?T ?A?E???E
&
54A - Food ending in ramen a lot (7)
????L?S
As usual, some of these letter may be wrong.