Nothing wrong with automation per se but I would want it closely tied to the notes in the track which isn’t possible currently AFAIK.
Automation visible (and selectable) vertically as a column in the tracker beside the notes would probably work too.
The intended usage: Articulation of individual notes using various parameters. (pitchbend, vibrato, filter, volume, etc…)
Note that you’d probably want these to respect note delays and things like that.
Implementing Smooth Pitch Bends (MIDI) and friends would be a great step on the way though.
You do know there is a line that follows your cursor position that goes down the Automation? Scroll down the Pattern, see the white line move, when it’s on the note enter a point with double click, below there is a box you can type in exact value if you desire. Although maybe not quite so easy for picturing afterwards…