I guess there are topics to differenciate:
Emission curve - market capitalization - price action - inflation - investors - consumers
As an investor of the sum x, I am interested in an higher price. A higher price comes with demand. It doesn’t matter, if the demand comes from investors, consumers or both.
Theoretically, if the market capitalization remains equal over time, the emission will decrease the price. If the emission rate is high, price will go down fast. If the emission rate is low, price will go down slow. As an investor/staker, possibly nothing really happens, as the emisson payout compensate the price decrease. But as an investor I don’t have the interest that the market capitalization remains equal… it should go up! (Thats means, a stable price [the emission pushs the marketcap up] or a higher price is needed.)
Sure, if the price would be stable, a higher emission rate would attract new investors. But I guess a higher price comes with promisingly inovations and/or adoption, not because 1,000 new stakers decide to stake the coin for one or two years…
So, independently of our choice which emission rate will be selected, adoption inititives like cryptocity are important.
The idea of inflation is that people spend their money, as money revenue leads to economic growth, not saving. Do we need inflation now, as the user basis is really low? (No.)
In my opinion there is only one worst case: A too high emission rate. Why? Because price decline would unsettle both, new investors and customers (holders for a short period of time). If I buy NIM for $10 and tomorrow it worth $9, well…
In the end, as a consumer I would prefer a stable price, while price actions means volatility.
As a staker, sure, I wish a staking compensation, that means I am okay with a stable price, but better increasing price.
I guess, the network needs stakers. If the emission rate is too low, nobody stakes. Especially in the beginning, I would set the emission rate to 4 %.