Large struggles by family in 'Succession' drama (4,4)
I believe the answer is:
king lear
'succession drama' is the definition.
(Shakespeare play about succession)
'large struggles by family' is the wordplay.
'struggles' indicates an anagram.
'by' says to put letters next to each other.
'family' becomes 'kin' (synonyms).
'large' with letters rearranged gives 'glear'.
'glear' after 'kin' is 'KING LEAR'.
'in' acts as a link.
(Other definitions for king lear that I've seen before include "Shakespeare tragedy" , "Shakespearean tragedy" , "One of Shakespeare's tragedies" , "Play set in medieval Britain" , "Shakespeare's foolish tragic monarch" .)