So two things, first the rules question, then the concept.
So kobold druid, I am considering this but I kinda need to know how you would interpret this part of the druid:
You retain the benefit of any features from your class, race, or other source and can use them if the new form is physically capable of doing so. However, you can't use any of your Special senses, such as Darkvision, unless your new form also has that sense.
Would that negate sunlight sensitivity if you became some normal light-dwelling creature?
Second part, concept that came to mind when I considered this option, a kobold druid who thinks he is a barbarian:
Moon Moon is an outcast kobold from a cowardly Bluewax tribe. The Bluewax seeks to survive the coming storm by digging deeper and hiding further from the surface. His tribe has the odd habit of keeping candles in the darkness, not so much as a source of vision, but because the Bluewax claim that if a kobold's candle goes out, or if they lack a candle altogether, "the darkness" will "eat them". They fear that when the last candle burns out, the apocalypse will be upon them.
Moon Moon is a kobold who lost his candle and was "devoured by the darkness" in mind and body. He eventually scurried into a tunnel leading to the surface, one looking up at a large full moon in the sky. From that day forward, Moon Moon has called the moon his own personal candle that will never go out.
When Moon Moon returned to his tribe, The Candle King was outraged that a kobold could return alive after his candle went out. He declared Moon Moon a heretic, an outcast to be shamed by all kobolds. Being treated like an outcast changed Moon Moon, and he believed everything that his tribe would say. They called him wild, feral, a barbarian. They shamed him for his uncontrolled rage and blamed him for all manner of theft, accidents, and illness. He begged and pleaded and apologized constantly for all his many sins, but none would listen. As supplies dwindled, whether food, potable water, or wax... Moon Moon was blamed.
When messengers arrived to attempt to coerce the Bluewax into sending an emissary to an alliance of sorts, The Candle King called this intrusion the greatest of Moon Moon's follies. Clearly Moon Moon had brought the outsiders here, and only sending Moon Moon away with them would restore the Great Candle to it's former glory. Moon Moon was cast out as an offering to the outsiders, so that the Bluewax could once again vanish into the mountains never to be heard from again. Yet, The Candle King also pulled Moon Moon aside one last time before he was banished. "The wax trickles away. The great candle shrinks. There will be little wax to give the children. The darkness comes for us. We must have more wax!"
Moon Moon stared, bug-eyed at The Candle King one last time in confused silence. He pointed one crooked finger towards his great candle in the sky. Moon Moon said his last words he thought he would ever have with his tribe that night. "You no take candle!"