Really, this is all such moot discussion with the minimal limitations on what skills you can learn. With Skin Graft as a 3+ polymorph needed skill, it will remain a great skill, but not one that you can throw into any build for instant massive utility. We really need to see proper limitations on skills. Even 2 points needed for certain skills would be a good start.
Have the devs said this, or something like this? I haven't seen anything official about the current skills gaining requirement increases. I guess I hoped they'd just have more skills with higher requirements in the full release.
Higher reqs for some skills would be a great way to get more build diversity, I'd like to see that.
No they haven't said anything, but it'd be absurd for them to not impose requirements on skills. As much as freedom in a classless system is fun, you're absolutely right that no/light requirements actually reduces build diversity. And is just a nightmare to balance period.
Marksman Fang being better than ricochet depends on how enemies line up. But anyway, resetting both ricochet and marksman fang would be even better than basic attacks. We'll see if Tactician mode can be tough enough to make losing armor basically fatal no matter what. I don't think that's a good direction (in fact, I'd like to see losing armor a little less dangerous). I would not be surprised if Skin Graft gets nerfed. It is probably the most versatile skill in the game. We shall see if other factors make it less powerful though.