Very little in this puzzle was objectionable: it's a fine example of a Monday, although it played just a bit slow for me. Not sure why.
The theme is straightforward: _ALLOF____, with good examples of the form in all four entries. CALLOFDUTY is the most modern (I suppose FALLOFROME has to be the most classic, right? See what I did there?). Is it a problem that one of the two long down clues also has a rhyming word in it (SMALLWORLD)? Or that WALLE is right there as well? I don't mind it.
I couldn't for the life of me recall GENESISKEL's name. I had Gary Siegel there for a brief and shining moment (shining for Mr. Siegel, whoever he is... okay, I just Googled the name, and came up with Gary Siegel Therapy, with brain mapping and neurofeedback, so that's pretty cool).
Things I didn't like: ENWRAP. I really hate this en- business. It's nearly as bad as the a- family of words, such as "awhirl". TARO, RUHR, and OMAN are the daily groan of crosswordese (we're going to make this fly, folks!).
Things I did like: FLUFFY, CELLO (I love my Yo-yo Ma recording of the solo Bach suites), IMSET, and PAWSAT.
All right, I'm done. Good Monday.