Joey do you have Skype? Not to toot my own horn but I probably know more about Reaper than pretty much anyone who doesn't work for Cockos
so if you need a hand with anything at all let me know. I'm free pretty often to voice over Skype and do some screen sharing or whatever. Reaper is SUPER powerful and I know you like custom actions/macros and Reaper is the best DAW going when it comes to that stuff. You can create pretty much any workflow you want and make it efficient as hell.
PS. Reaper does have mouse tools, and you can build the tools to do absolutely anything at all. Here's a video of me using a scissors tool
http://screencast.com/t/YzI0YTkwND
The other option is to create actions that work under the mouse cursor instead of the edit cursor, so you can just hover your mouse somewhere and press a key to perform your split for example. Basically the same as a mouse tool except the mouse button is on the keyboard instead of the mouse
What tools are you using besides the split tool? I'm a PT guy so tools have never really been a part of my workflow but I'm sure I could help you come up with a workflow you love in Reaper. Since Reaper 3.45 I have been able to edit much faster in Reaper than even in Pro Tools and Pro Tools was always the king for the way I like to edit.
Reaper is already very "Cubase" by default in a lot of ways so if you wanted to give it a real shot I'm sure you could get it to do all the things you like about Cubase, as well as the things you may have liked about PT. Reaper is NOT a DAW for people who want to just adopt the default workflow, it only really shines in the hands of someone with a lot of real world workflow experience who is willing to put in a bit of time to customize the program to behave the way you want, but once you do that it absolutely cannot be beat IMO.