I?m not sure that I agree with that line of reasoning.
I?ll grant you that if Bio intended for the extra shapeshifts to be there in ToB then it would have been nice if they had updated the kit description ? but as it is there is plenty of room for interpretation.
In SoA the existing kit description is 100% accurate.
In ToB, with the extra shapeshifts it is not inaccurate either.
It doesn?t say at 13th level the shapeshifter will gain the ability to shapeshift into a Greater Werewolf form once per day and never gain any more shapeshifting ability.
What does seem clear to me is that Bio intended the shapeshifter to continue growing in power as they gained levels. If anything it is the kit description that is unclear. Once the SoA cap was lifted in ToB it *should* have been possible for the Shapeshifter to gain more GWW form shapeshifts & it *is* that way in the game.
The fact that the Shapeshifter *stops* gaining more forms at 25th level bolsters my feelings about this. Had it been a ?bug? then they would have kept gaining extra shapeshifts all the way to their max ToB level of 34. That would give them 11 shapeshifts at 33rd level. The fact that Shapeshifters stop gaining forms 25th level indicates to me that this is *exactly* the way Bio intended them to work. Shapeshifters were suppose to be able to gain up to 7 GWW shifts. To me this indicates how Bio tried to balance the ToB Shapeshifter.
Bottom line, I don?t think that this is a bug. Without input from the Bio staff I don?t think that we will ever be able to determine this for certain though.
That leaves us with talking about balancing issues. I believe that your contention is that the new Feral HLA ups the power of the GWW form making it nearly ?unkillable? and thus once per day is needed for balance. That?s obviously a judgment call and something that is at the heart of a lot of what you guys appear to be doing with refinements.
I took a quick peek at the resistance changes you guys made this AM. I do admit that my first impression was along the lines of ?Holy Spit!?

First I gave up on the normal WW form about half way though SoA. It just couldn?t keep up with the warrior types. In SoA once I got GWW form I tended to leave the PC in it a lot. Since I only had one shift per day I tried to get the most out of it. I went through lots of critical areas & dialogues while in GWW form.
In ToB, with more than one shift per day, sometimes I did let him run around in GWW form for a while, but more often than not what I did was have my PC in human form. When a big battle started I would have him cast a few spells, then shift into GWW form and join the warrior types in melee. Generally I would have him shift back and forth several times in the course of clearing out an area like Sendai?s lair. Where I got into the most trouble with him was melee. In the default ToB my Shapeshifter PC almost never took much elemental damage, certainly never enough to threaten his life. Instead it was the melee threats he had to watch out for. Many of the ToB foes have insanely low THACOs. Generally they could hit him even with a super low AC.
I see that Feral Spirit does lower the GWW form AC by two, but that?s not a huge change balance wise. The resistances *do* get a big boost, but I?m not sure that they will really protect the GWW from the true threats in ToB. Making the claws act as +3 weapons is a boost but, IMO, this is more of a bug fix than anything else.
The biggest change balance wise IMO that you are making is in not allowing conversation while in GWW form. This makes total sense to me from a logical perspective, but it *does* limit shapeshifter PCs a lot. If they are required to be in human form for dialogue *and* are limited to one GWW shift per day in ToB then this does severely restrict their ability to use their kit?s main power. If your shapeshifter is Cernd, who cares. I?ll miss all of his dialogue and probably never notice the difference. But you can?t do that with a PC.
Given all the balance considerations here is my 2 cents: Allow more than one GWW shift per day. It?s needed and not unbalanced. However if you worry that 7 shifts per day at 25th level is unbalanced then it can be restricted in a number of ways. You could limit the max number of GWW shifts per day to 3 instead of 7 for instance. You could change the Shapeshifter so that he gains an additional GWW shift every 5 levels (starting at 13th) instead of every other level. You could make a new HLA that the Shapeshifter would have to select in order to gain additional GWW shifts.