Show pressed characters while typing (For clarity)
Would be nice to see what you are typing and then transforming it into the desired symbol, for clarity.
As of now, we need two things:
- be sure we typed the right commands in order;
- see the system tray icon to check if it's green.
For me, it's just a shift of "what to memorize": Alt code sequences or WinCompose sequences?
An approach would be like most emoji keyboards do ( you type ":" and it only transform in the symbol when you get it right, or show all possible with typed characters) With Right Alt
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Suggestion:
- Press Right Alt
- All characters will now have underline (or other color?)
- After any char typed, show all possible symbols starting with that char
- When you finish, or select desired suggestion, transform given text into symbol
Eg (used github emoji style): Press RightAlt → Type 8 → Show suggestions (we only have one when starting with 8) → Type another 8 (88) → It auto transform into ∞ (as usual)
⎄ Compose 8 8 → ∞

Suggestions dropdown can be better planned and implemented later, at least show what you typed before transforming in a symbol
Also, would be nice if have had another color on icon tray, for double ⎄ Compose See AHK Hotstrings