The only items that typically require 220 are ovens and electric dryers. Each outlet in the kitchen will be a split receptacle, but that is just two separate circuits on a double breaker. If the old panel is small, you can run out circuits / breakers with a major reno. In Ontario, for example, the microwave and refrigerator would also be on their own circuit and if there is a breakfast nook or dining area attached it also has to be on its own circuit. Critical items like freezers and sump pumps also get placed on their own circuit as their failure can be costly. A good electrician will know all of those local codes by heart. For my reno we had to rewire the whole house, so I did a complete wiring diagram to make sure every circuit was within accepted limits.
The AV gear listed in your signature should run off of a single 15A circuit, but I like to have a second circuit available just in case for future proofing. Have one outlet at your AV location on one circuit and have a second outlet nearby that is on a different breaker in case you need to split the load. This does not require any 20 amp circuits but does require two cable runs to the room. Think about where the power cords in the room will run when you plan this. Do you want to keep the outlets behind something so that the cords are not visible or do you need easy access to the outlets?
Other place to consider is a workshop if you have one. A lot of power tools can draw a lot of current. My router and table saw can draw up to 13 amps each. Most of the time you only run one tool at a time, but if you have dust extraction with a good size motor, that can put the circuit over 15 amps, so separate circuits are needed.
