You should have made that clear in your initial posting, regarding the relative 'decisiveness' of the Maida campaign. It was a raid, and in that aspect, it was successful. However, the overall fact is that the British could not hold ground in Calabria and Smith was not ashore at all during the campaign. Further, he had little control, if any, of the ground operations. Smith failed in southern Italy, as had failed before Boulogne the year before.
Regarding unity of command, to which you refer, Smith was not an 'innovator' in this aspect of the principles of war or being in command. H, aving one commander is an age-old axiom and is a principal of war. Napoleon remarked about it during 1796-1797, stating that it was better to have one bad commander than two good ones.
Lastly, your comments regarding how well Smith 'understood' Napoleo.n is not only a sweeping statement, it is not backed up by any evidence