A say in revamp of pub: good role, mostly (5,5)

I believe the answer is:

blood group

'a say' is the definition.

'revamp of pub good role mostly' is the wordplay.
'revamp of' indicates an anagram (I've seen 'revamped' mean this).
'mostly' means to remove the last letter (most but not all of the word).
'pub'+'good'+'role'='pubgoodrole'
'pubgoodrole' with its final letter taken off is 'pubgoodrol'.
'pubgoodrol' anagrammed gives 'BLOOD-GROUP'.

'in' acts as a link.

(Another definition for blood group that I've seen is " Type of red stuff".)

I've seen this clue in The Times.

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