Just wanted to touch on this a bit before I start the coffee brewing.
There is a reason for the design, and it's two-fold.
1.) Blizz wants the first two tiers in the talent trees to be useful for sub-specing (talking in general). For druids, moonkins/ferals dip into resto. Now, it would be easy to make more interesting semi-passive talents for moonkins in the resto tree since they're both casters, but the trouble comes with feral. Blessing of the Grove increases damage/healing, Furor increases our resources, so the only thing left we all share is the ability to shapeshift (hence Natural Shapeshifter). It's also a talent that takes little effort to balance between specs.
2.) Blizz wants to avoid bears and kittens to nab the exact same talent tree (part of the separation of roles in one spec). As a kitty, you'd probably end up taking 2/2 Blessing of the Grove and 3/3 Furor for those times when you have to shapeshift and don't want to end up with zero energy... which leaves them needing to blow 4 points extra in the resto talent tree to get Master Shapeshifter to increase their damage output. For bears, I see something more along the lines of 3/3 NSS, 2/3 Furor, 3/3 Perseverance and 1/1 MSS. Okay, what does this accomplish? In the efforts of a kitty to maximize damage and a bear to maximize survivability/threat, Blizz has does something rather neat by funneling points into a shared utility talent in order to keep kittens from getting tank talents and bears getting kitty talents elsewhere in the feral tree. Long story short, it's designed as is to prevent a kitty/bear hybrid spec that can do everything, and each talent tree iteration improves on this.
Now, if you're asking me if I like the values currently in place, I'd say no. With how low the shapeshifting costs currently are, the talent does become lackluster (however numbers like these are usually changed last since they don't impact gameplay too much). On the other hand, MSS still seems almost too weak to the point where bears and kittens won't want to pick it up. As it stands, yes, the 4 points seem like a waste currently, but I have provided you with the reasons for their design. I can almost guarantee that the design will stay the same, even if the individual talents and/or values do not remain. If anything, Blizz would probably adjust MSS to be more appealing in some way so the points invested make NSS a nice bonus at the end of your 3-point investment.