Additional support for automatic refactorings
Take a look at http://www.refactoring.com/catalog/index.html. At least a dozen of these could be added to the existing refactoring support in Delphi.
Ones that are fairly straight forward:
Introduce Parameter Object
Replace Parameter with Explicit Methods
Replace Temp with Query
Split Temporary Variable
Replace Method with Method Object
I've seen most of these implemented by third parties in either Delphi or another IDE so there is no doubt they are feasible.