Thanks, I appreciate the honesty.
Theese two are the only mock-ups I have ever made, the rest are all original compositions. Maybe they are not masterpieces, but at least I've tried to be diverse and true to myself. Ironically, I decided to post two mock-ups as "presentation pieces" because I have seen that people on the internet are mainly interested on mock-ups. The reason is simple: a mock-up is also a shield - you expose yourself on the technical side but not on the artistic one, you show what you learned but not what music actually means for you. You know what? This seems exactly the right place to say "screw this, I'll post them anyway, and if something doesn't work I'll restart from scratch". From now on I'll try to be slightly more aggressive.
About MIDI quantization: I never ever quantize anything and I insert notes with my mouse because I know that way there will be some imprecisions, when I write for piano I even decide the order of the imprecisions when playing for example a chord, them I listen to the velocity values of the single notes of a chord until I feel the voicing is right. HOWEVER, you are simply right about not making the lines breathe with pauses. I know how important it is so that was just laziness on my side, I'll keep that in mind for the future.
Vibrato: here I disagree. With CSS I only have access to two vibrato layers (non vibrato, standard vibrato), so the solution would be to LOWER vibrato so that its presence, if used sparingly, becomes an accent. Also, without vibrato chords sound clearer and here there are quite a few seventh chords so it's a very tricky equilibrium. In any case... CSS non vibrato layers don't trigger legato at all. You can't imagine how disappointed I was when I discovered that, especially considering I was coming from Hollywood Strings (which has his own enormous set of problems btw). In the end I decided to completely pass on vibrato due to my inexperience with the library, but may have not been a smart choice after all. Thanks again.