Brief title for your desired feature:
Add ability to replace an existing component in the schematic with another part.
How would you like the feature to work?
In the 'Parts Attributes' panel, add a button to replace the part. The button will open the parts manager where the user will select the replacement part.
Why is this feature important to you?
Often a component needs to be replaced. Currently, there is no way to do so. The only workaround is to place the desired component, delete the existing one, move the new one into place, and rename its RefDes - a long process.
A common scenario is to quickly create a schematic using parts from the EELib. Later, the parts need to be replaced with the correct ones.
Another common scenario is a part placed is found to be incorrect or need changing.