So, I'm bumping this slightly... with an idea! =]
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Bahmani Sultanate (Ala-ud-Din Bahman Shah)
Start Bias: Grassland
Capital:

Bidar
UA:
Takht-e-Firoza
All yields of Bonus, Strategic, and Luxury Resources within workable range of the

Capital are increased by +1. Cities gain +5%

Military Unit Production for each different Luxury Resource worked.
UU:
Shaturnal (replaces Cannon)
Available earlier than the Cannon it replaces (at Gunpowder rather than Chemistry), the Shaturnal is also rather weaker (17

Ranged Combat Strength vs. 20) and requires Horses. However, it is also vastly more manoeuvrable, with a base

Movement of 3 and an additional +1 Movement promotion, retained upon upgrading. It also starts with the unique promotion "Goan Reconquest", which grants a +33%

Combat Bonus against Land Units. Upgrades to Artillery as normal.
UB:
Gawani Madrasa (replaces Library)
+1

Science and +2%

Land Unit Production for every 2

Citizens in the City. Additionally, units trained in a City with a Gawani Madrasa cost 5% less to upgrade for each different Luxury Resource within workable range of the City in which it is built.
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So, this is obviously based around midgame war, with a highly mobile version of the Cannon that excels at land warfare. The Bahmanis were good at that, kicking lumps out of Vijayanagar and being among the first to adopt heavy cavalry and artillery in medieval India, which I've tried to convey through the Unique Unit. They were a fighty bunch, them. I've given them a focus on Luxury Resources because of the splendour reported in
The Journey Beyond Three Seas, a famous travel book by Afanasy Nikitin. He was a Russian who travelled extensively in India, mostly through the then-magnificent Bahmani Sultanate. Hopefully this is of interest and/or use to y'all. =]