In an ideal world I'd suggest
making a list of the features in the current tools that are wanted
making a list ..... new tools.... blah-blah
making a list of new features wanted
making a list of dud 'features' to get rid of
move to PlusTools
implement whatever can be implemented from the above lists.

Probably the crucial question is whether the PlusTools stuff includes  
enough capabilities to keep people from revolting in the interim.

And of course finding someone with the time/commitment to do the work.

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
State-of-the-art: What we could do with enough money.