The firm has slated three more block trading solutions for MiFID II.
There are also concerns about the data being used by Esma to set the rules.
Revised Emir reporting regime comes into effect in October 2017.
Banks may need to find up to $50bn of extra capital for new European entities.
EFAMA said political uncertainty in Europe has reduced following the election of President Macron.
The firm's merger with Standard Life is due to complete next month.
The roadmap looks beyond the UK leaving the European Union to 2025.
The calculations specify the MiFID II transparency regime for non-equities.
Brexit-related fragmentation could require banks to hold additional equity capital.