Overall, I believe this is a good way to foster relations between the Hive and Splinterlands community, because simply put we need each other to survive.
Some people (myself included at some point) believed the Hive community owed Splinterlands for simply existing on Hive, but the truth is both entities make each other better. Splinterlands would not exist if it wasn't for Hive, and the witnesses that actively confirm blocks. Hive would likely have a much smaller community without Splinterlands.
This is clearly a mutually beneficial relationship so I personally see no issue with the SPS DAO having more exposure to the performance of Hive, thus aligning incentives more closely.
Notes:
RE: SPS Governance Proposal - DHF Agreement