I would love to pick your brain a bit sometime, Jantje. I also use Eclipse CDT for the software development side of PSoC projects. (PSoC Creator compiles C, but not C++, and doesn't have many of the advanced features that CDT provides, whereas Eclipse allows compiling C++, along with all the Eclipse/CDT bells and whistles.) PSoC Creator must be used to define the configurable hardware, assign pins, etc, however - so it's a 2-part process - hardware definition/configuration in PSoC Creator, then software development in Eclipse, then upload (including writing the hardware config) in PSoC Creator.
I have a baseline Eclipse project setup (configured according to some information provided by some helpful and smart folks in the community!), and I base the Eclipse side of new PSoC projects off of the baseline Eclipse project - involving some renaming, copying, pasting, etc. I'd LOVE to be able to setup some type of plugin or wizard that would let me create the CDT project from an existing PSoC Project w/o all of the manual intervention), and could envision that working similar to Sloeber in some respects.
BTW, I can't adequately describe how excited I am to hear that you're working on a new version of Sloeber!! You are truly a Knight in Shining Armor!! :-)