Why on earth would anyone wish to create music using such a crazy and stupid system? That's the bontempi solution to art? It's even worse than trying to create music with a mouse by clicking on grids - which most people moved away from years ago.
I do understand that some people don't understand music, and find repetitive riff/pattern based music what they want in this world, but they can click on proper screens in a DAW and visualise what they're doing - great for synths and stuff plus of course drums - but the notion of typing in note names, and note lengths is just like thinking painting by numbers is realistic art. Only a fool would transcribe a Beethoven symphony in this way - it's just plain daft.
MIDI needs so much data to be realistic. If you suddenly have an idea and a tune pops into your head, you hum it don't you, so you record it into your phone and then stick it into your DAW. You really convert the tune in your head into letter names, how long each letter name lasts and how loud it is - that's not music it's a memory test! Many people dismiss tab, but it does do a job - text is just a very inefficient way of getting music into a machine. How would you enter a chord?