Sometimes the AI is dumb. For example, you tell one member to go 'here' and they go 'there', and then an altogether different character starts running regardless of not having told them to do anything. Or you want to run away from a battle and not everyone follows. In some instances it may be a bit overwhelming having to control all your characters individually, but on the bright side you can somewhat strategize an attack or solve a puzzle a lot easier. Graphically, Summoner has goods and bads.
Lets start with the bads.
The character modelling seems pretty basic. The body parts look as if they've been stuck on the torso with adhesives or something. However when the characters are moving around, it all comes together rather fluidly. Another irk graphically is the size of the worlds you move around in. Other cities are just as big themselves although minus the differing locales.