Whaaaaaaaaaaaaat? The magic system in skyrim is god awwwwwwwwwwwwwwwwful compared to oblivion, hello, no spell making, no open lock spells, no fortify so and so skill or attribute or magicka or health spell, the magic system in skyrim has been gutted, burnt, incinerated and shot into the center of the sun!
While Skyrim has done many wrongs in regards to magic, you are simply making it seem much worse than it actually is.
I will agree that spell making should have been added either as a feature or as a skill in Skyrim but I will also state that the spell-making system was not well-thought and was quite broken in Oblivion. I will also add that the -% magicka system is stupid and that spells should have been a bit cheaper and weaker by default. The spells should have also gotten damage boosts with enchanting and destruction leveling instead of the -% magicka.
As for open lock spells, they make the already useless lockpicking perks even more useless and fortify skill spells are not needed in a properly balanced game.
I would also like to add that the way that spells are cast has been considerably improved in Skyrim and that is something that they should keep and expand upon.