Another mythos that I don’t know well enough to put high on my list of pantheons to work on is the Chinese pantheon of the Celestial Bureaucracy. I would want to try and incorporate the faith of Kara-Tur if possible, and the Path and the Way that originated there and is used in Spelljammer. I have also heard that some of these deities may have been invented/misunderstood, like Apshai and Druaga, but I don’t know which.
As with some others, I would need to get good sources before I worked on it.
The current deities in AD&D:
—Chao Kung Ming (1e DD)
—The Ch’eng Huang, various minor tutelary deities (2e L&L)
—Chih-Chiang Fyu-ya (1e DD)
—Chih-Nii (2e L&L)
—Chih-Sung-tzu (1e DD)
—Chung Kuel (1e DD, 2e L&L)
—The Dragon Kings (2e L&L)
—Fei Lien & Feng Po (1e DD)
—Fu Hsing (2e L&L)
—Kuan-ti/Huan-Ti (1e DD, 2e L&L)
—Kuan Yin (1e DD, 2e L&L)
—K’ung Fu-tzu (2e L&L)
—Lao Tzu (2e L&L)
—Lei Kung (1e DD, 2e L&L)
—Liu (2e L&L)
—Lu Hsing (2e L&L)
—Lu Yueh (1e DD)
—Shan Hai Ching (1e DD)
—Shang-ti (1e DD, 2e L&L)
—Shou Hsing (2e L&L)
—Sung Chiang/No Cha (1e DD, 2e L&L)
—Tou Mu (1e DD)
—Wen Chung (1e DD)
—Yen-Wang-Yeh (1e DD, 2e L&L)