Should I put in a sub-panel to add breakers to an older home?

I’m renovating my kitchen in a century home. It has already been updated with newer wire, but many shortcuts had been taken by the previous owner. I plan to replace the old wire throughout and add the many missing outlets required by code (that were not added by prior owner). The main breaker panel is pretty much full and in a difficult place from which to run new circuits.

I’m thinking of running a feeder circuit to a new panel that would be closer to the kitchen. I have full access to the kitchen from the basement below it.

What are your thoughts on this? Are there any hidden considerations when doing this?

Thanks for your input.

Sorry about that. Additional information:

The main panel is 220, so relatively new. The kitchen is 20’x15’. It only has 6 outlets, one light and one oven outlet. I plan on putting in an island with multiple outlets, pot lights and the number of required outlets to meet code. I will also be relocating the location of the oven, so that will need rerouting. I have two slots open and would expect to have at least another when the existing one for the kitchen would be replaced with the new panel.