Perhaps no one mentioned these:
STED Hero (STED: Starfield of Memorable Relics) - From one of ADK's few FC exclusives. There's even a fanslated English patch available.
Titular character (Cosmo Police Galivan) - Nichibutsu needs more attention.
Doropie (Magical Kids Doropie) - I do have one, but there needs to be a larger version.
Saizou (Ninja Cop Saizou) - Kyugo was its JP publisher, while AI developed it. AI is also responsible for Wing Force arcade by Atlus.
These are a few I can post. If you need more ideas, let me know. Thank you.
My Mugen Wish List would include protagonists, mascots and other iconic characters with everything they have brought straight from their source with little or no editing.