From what I have seen, a lot of LPs come to Bancor for the rewards but end up staying for single sided liquidity and IL protection (liquidity is very sticky on our platform). These are very strong features that gives us an edge over other AMMs and many take for granted until they LP for the first time here. The alternative for LPs would be to sell half of their holdings to provide liquidity in other AMMs. For many long term hodlers of these tokens, that alternative is a non starter as they are long on their holdings.
Regarding extending rewards for these two pools, I am not against it if the argument can be made for it (see for some good guidelines A Wager From the OCEAN LPs). I am also of the opinion that we should let other communities that benefit our platform have a chance at a LM campaign (this is how we grow the user base and convert people over).