Row about who to start first getting more complex (8)
I believe the answer is:
twistier
'more complex' is the definition.
(something with lots of twists is complex)
'row about who to start first' is the wordplay.
'row' becomes 'tier' (tier is a kind of row).
'about' is a charade indicator (letters next to each other).
'who' becomes 'twi' (I can't justify this - if you can you should believe this answer much more).
'to start first' becomes 's' (tst letter of 'start').
'twi'+'s'='twis'
'tier' after 'twis' is 'TWISTIER'.
'getting' is the link.
(Another definition for twistier that I've seen is " with more turns".)