Character build are promoted with less slots. On option "unlimited skill" you destroys all the builds, there is just one. All.
There is surely something in the middle between "tiny restricted skill set" and "ALL THE SKILLS FOREVER". I absolutely do not agree at all with the ridiculous notion that restricting you to 3 total skills at Rank 2 will promote character builds. People will always, always only pick the most efficient skills for those slots and never use the others ever. It will produce FEWER builds, not more. It will be boring as you use the exact same tiny number of skills over and over again for ages.
For example, a Warrior will ALWAYS have Battering Ram as one of their two skills because it is too useful. That leaves only one other skill slot for anything else for a long time.
A build does not equal one skill. A build is a SET of skills which synergize.
I don't have time to answer the first question right now. I already answered the second one with a BIG FAT YES.
