I've fall in the same question some time ago - where to invest HIVE? Finally I stopped at what you mentioned - the Splinterlands' DEC/BUSD liquidity pool at Leofnance.
The game itself provides a constant influx of DEC, the rate can be considered equal to $1 per 1000 DEC. Paired in the BUSD (another stable) this is 200% APR or 600% APY in LP.
The BSC fees are extremely low, so you can reinvest daily.
What do you think?
RE: Decided to Power Up 4500 HIVE - Time to get back in the game