Yea the minimum cap is at least needed to make the product great, everything after will going fully in the ecosystem and adoption rate. Eventually i think investors get a good deal on both situations.
Reach minimum cap they own more %
Reach max. cap the ecosystem will get more promotion and probably a faster adoption.
But both ways we are going to make a awesome product that can grow for years.
A big hard cap is fine if it completely will be used for the tasks you mentioned. Promotion could be key in 2019.