As far as the voice, for the music he writes as a solo  artist works actually much better than when he was with Iron  Maiden.   Blaze’s  range is more accommodating  and better suited to  his solo career writing style, being more exciting and catchy.   I  felt his work with Iron Maiden (“The  X Factor”, “Virtual XI”) was fine, and just  fine at that, to no  fault his own since Steve Harris and  the other members of Maiden do write all the music.  
                          Arrangements even have a slight modern quality to the  riffing patterns making “Blood and Belief” a record that will  appeal to traditional fans as well as those of today’s sounds.