I want more to be added to what the various starting perks do. Or for it to be made more clear. Because like, you have hung and mini, which affect transformatives, and Ice Cold, which adds a whole special mechanic, and milky, which makes lactation harder to stop (and based on the wiki, increases the milk produced). And then you have things which I think are effectively just one-time transformatives that aren't even all that strong. Basically, I want these perks to have a persistent, if small, effect on the character, rather than being something I can easily get by doing something like farming Motherwort or getting some other item.
You're right, they could probably use an overhaul. They were implemented long before most (all?) of the transformatives were and it shows.
What's the point of Extra Ardor, anyway? Especially after minimum Lust requirements for sex were removed. Voluntary hard mode?
Why would you take Infertile when Steriliex is right there? If you want it to be permanent, it's just 750 Credits, and it's easily reversible with one dose of Fertite+ if you ever change your mind.
I tested Milky awhile ago and as far as I can tell, it doesn't actually change the amount produced. Maybe it did, but got changed. Starting lactation is easy, since there are a number of TFs that just set it to the proper value. Preventing stopping is easy with perks like Hypermilky, Mega Milk or Honeypot preventing cessation entirely. Or just wear the Bounty Bra. After the Tease combat rework, it's not behind on Sexiness anymore.
Edit: What it does do is make Milk, Production Training gain from boostlactation events 1.5x more effective (Hand Milk/Magic Milker/Milk Barn, Milk Squirt Tease, etc.), and reduce the loss from overfilling to 1/5. And blocks loss entirely if you're not at 200% fullness, if I'm reading this correctly.
If you want permanent effects that can't be replicated, your choices are Ice Cold (which you mention) and Incubator.
Incubator stacks with every source of bonus Incubation speed. Unlike, say, Elasticity, which is ignored by the two best sources of Elasticity (Orefish Shards and Black Cat Costume).
Ice Cold is weird. Normally for a Tease build, you want high Libido. You start with a low Libido and raising it can be expensive, unless you want to take the Treatment. Libido increases are also usually tied to other effects you may not want. That said, I've found the Bimbo Siegwulfe can carry pretty hard in the early game. You're also more vulnerable to Tease attacks if you start a combat with high Lust. Did they decrease base Lust gain over time at high Libido? It feels like they did, but I can't be sure.
With Ice Cold, you want low Libido (for accuracy) but high Sexiness gear (for damage), which increases Libido. You also have a decreased base Lust gain on top of a low Libido. It also locks you out of Energizing Libido, if that's something you're interested in. If the proposed Hard Mode (where masturbating decreases your XP) is implemented, Ice Cold will likely be the strongest choice, mechanically.