Personally, I wouldn't want to see automatic coin control added.

One of the things that keeps me intrigued about HYP, is the fact I HAVE to keep checking my wallet to ensure that my blocks are staking, then rearranging them to what I believe to be optimised. I could probably say I'm addicted to checking it.
Look at it like a garden - if you don't look after it, your flowers will still grow, but not as well, and there'll be some weeds creeping in there too. I don't want blocks under 1k, (weeds), I want nice strong staking blocks (flowers) to shine through and earn me my optimised interest, and at the same time, compound my interest to give me advantage over others who don't take so much care.

Now, if you decided to add an automatic coin control feature, then why not benefit the community wallet with it - set aside 1% of the S4C going towards the community wallet. If people aren't willing to optimise the results themselves, let them pay for it. 1% is nothing in the whole scale of things.

Honestly though, consider not adding automatic coin control - you'll take away what I see as a big part of HYP's addictiveness.

Just my opinion.......