First off - it looks really nice - it has a very stylish feel to it and when you mentioned Rolemaster I simply smiled. Your map is very much in line with the officiel shadow world maps made long ago.
May I ask how large the image are made to be able to support A0 size?
maybe drop some screenshots of the map bits - specially I would like to see how you made the mountains in the center. They seem very dominating and maybe a but to straight for my taste (but its only taste).
Another thing - where did you get it printed and laminated ? I only have access to A3 laminting machine but when time comes then the dream is making it huge for the table as you did.
All in All it just look PRO!
NB: didnt know anybody played Rolemaster anymore it also sadly died out in Denmark I believe!