By releasing it to the public the dev is obviously interested in hearing about what people think of the idea/app and what features they would like to see in future more stable versions.
Heck, I uninstalled totalfinder so that I could play around with FinderPath which is quite cool btw. Unfortunately FinderPath and TotalFinder do not play nicely, expected, so I uninstalled FinderPath until newer betas are out. I like the idea, I like that it's not much of a hack, good coding behind it. I would like to see compatibility with TotalFinder but I am sure that will come soon enough. Ummm...
Right now FP's functionality is limited but as the description stated it would be. Right now it is pretty much the same thing as pressing "Shift + Command + G" (the go to... command.)
I look forward to new releases and if FinderPath and TotalFinder can be compatible in the future, keep up the great work dev! Simple but fresh thinking. Definitely going to follow this app.