Hi @BD3D, thanks for the support. Also, thanks for standing up for our cause on RClickSelect, i noticed you have some really cool suggestions for precision modelling. I actually wanted to make some of the suggestions you made, well done.
Yes, anyone involved in precision modelling is most probably to be familiar with a lot of mainstream apps, and the NP operators tend to give the best and simplest workflow possible. Unfortunately, the addon is in somewhat ‘freeze’ status right now, due to the daily workload of the authors.
As for the ‘knife’ function you mention, i can suggest an addon that goes well with the float_poly and adds that feature to the workflow - i use it very often - Snap Utilities by @mano-wii. The ‘Line’ version of the addon is free and it is the one i use, called with a shortcut in edit mode.
Also, if you are interested in precision modelling you might want to check out the list of possible features i made for the once suggested CAD app template, as well as some overview posts in this thread.