I think there’s no automatic way of renaming midi events like you want, but you can just select all midi events on the track and rename them all at once in the info line in the left-upper corner of the project window. (attachment 2)
Actually, you can have different names for many midi events on one track. For example one midi event is called “forte” and another is “crescendo”, so you can drag or comp them and see which one works better in a particular place of the song. Or maybe one group of the midi events is called “violins intro” another is “violins main theme” so you sort of get the lite version of Markers without a marker track.
Another good way to use different names for midi parts is for drums/percussion, when you have a full drumkit or orchestral percussion set, which goes from on VSTi. Enable Lanes on the MIDI track and name each event accordingly. That way you have many “layers” of midi events on one MIDI track, always knowing where is the “hi-hat 16th” where is the “intro break” or “kick+snare max velocity”. Makes copying and editing much easier, especially if you open your project later and do not remember what key the timpani roll was assigned to.)) (attachment 1)