One feature that would be nice to have is something that illustrates what the maximum attainable Cookie Chain value is at a given level of CpS, both normally as well as while in Frenzy.
The only possible hiccup follows because when in One Mind or Communal Brainsweep, there are chains alternating between strings of 6's and strings of 7's. Would suggest a user interface that looks something like:
Cookie Chain Wrath: 666.6 quint Gold: 77.7 quint
Frenzy: Wrath: 666.6 quint Gold: 777.7 quint
(Or whatever would be appropriate based on the user's CpS)