Your argument is one sided as you have left out what we have gained (or made a return) since those titles.
To name a few,
...Perks (imo, the best thing)
Perks are absolutely NOT a gain, perks are practically a loss the way they were done in Skyrim.
I'm all for Fallout style perks, but when you have perk trees replacing the actual skill as far as effectiveness goes, I'm out. Do you know what a perk is? It's a bonus, an extra. So why should I have to take increased damage perks just so that the combat scales correctly as I level up?
Many perks completely negate the character of the skill as well (perks that make heavy or light armor have no weight or that make it impossible to break lockpicks for example), and other perks are almost entirely useless.
Overall the entire skill/perk system was a disappointment, here I was hoping for Oblivion style skills with Fallout style perks before Skyrim's release but I guess that was too good to be true.