One thing I forgot to mention in my previous post: Every skill group, except Planet Management and Subsystems, has a skill of the same name in it which is generally the most important skill in the group and has a 1x training multiplier. If you want to introduce new skill groups, I would like them to keep with this "tradition" (which can be done without introduction of new skills, I am assured).

Multiple Targeting sucks. Target Management is much better. Target Acquisition to me sounds more like a targeting speed skill.

Spaceship Piloting is indeed 'naff'. Spaceship Command is much better. Really, there's no reason to change this.

Also +1 on standardizing the skill names for ORE ships. ORE industrial just for covering the Noctis is a bit dumb, unless you're planning on adding or moving more ORE ships to that group.

Not sure about the PI skills. PI is fairly unique in EVE industry, so it seems odd to spread it's skills out among the other industrial skills. I would vote to keep the Planet Management group.

I also like the idea of making the skill tree more of a tree. Right now it's fairly flat.

-All ship skills. Sub folders for race specific skills please!!!!!!!!!!!!!!!!! The total Spaceship Command list is 67 items long! break it down a bit, spare a thought for my mouse wheel!
-T2 ship skills (Assault ships, Interdictors, Heavy Interdictors, Recon, etc) would make sense to be in a different or sub-folder called something like Spaceship Command Specialization. Ties in well with the naming of the different weapon Specialization skills.
-Weapon support skills (Missile Projection, Rapid Firing, Controlled Bursts, Motion Prediction, etc) being in a sub-folder would really help separate them from the core requirement skills from the support skills. You could call the sub folder Missile Proficiency or Turret Proficiency
-Likewise with fitting skills. Separating out the "efficiency" skills from the "required for" skills would help clarify what's important to train first. ie; in Navigation there is Afterburner and High Speed Maneuvering and Jump Drive Operation in a sub-folder I'd put Acceleration Control and Fuel Conservation and maybe Jump Fuel Conservation. Call the folder Navigation Efficiencyor something.

I like the idea of sub folders because it would help with navigating the often long list of skills to find the one you're looking for. I'm glad this is being looked at, but just moving them around between single-level folders doesn't really help. We're still looking at big blobs of skills, slightly less vaguely grouped together without any real indication of how they interact. Using sub folders would go a long way to showing how skills relate to each other, not to mention cutting down on scrolling through large skill lists to find that one skill (and that's if you can even remember what it's called!!)