Hi SD!
I recently read Frogboy's note on how he has put in a request for an easier to use quest creator -great idea!
However, why not extend that concept and allow for a GUI'd hero and item creator as well, which can then be plugged into the game either directly (in the case of heroes, just setting a level at which they spawn and % chance) or via attachment to a custom tile (eg, having a "sword in the stone" tileset which can be discovered which grants the item, or even have it at the end of a quest).
What I would really like to see in these editors is more than just stat-line. For example, I would like to be able to assign items and history to heroes (including custom items I create!), but also give them special abilities (like Crushing blow etc) and other interesting abilities.
With respect to items, they could also have cool abilities - eg maybe a sword could have the dragon breath special ability? Maybe it would require a minimum stat-line to use? Maybe you could even apply tileset decals to it to make it look really unique - basically, make the item creator like the tileset creator, but allow stat and ability customisation as well.
I think that would help with the current "blandness" complaint by allowing organic flavour injection from your fans!