Awesome and exciting to see where you are going with all of this. Here are my top picks:
SCOTBOT SMT REWARDS
As you know, Hive Engine recently released the Smart Media Tokens smart contract which replaces Scotbot and is decentralized. I think seeing the ability to earn multiple tokens by posting or curating on Hive will really intrigue many people. Probably many currently don't realize there is such an ability because of the complexity of the system, and PeakD as a frontend can really help people wrap their minds around the existence of multiple communities with their own reward pools.
C. NEXT STEP TOWARD PATREON-LIKE SOLUTIONS.
Really interested to see what ideas you have here. The use case is already established. We seem to have a stablecoin (hopefully it will keep $1 during a bear market). If we make it easy for content creators and their fans to use it, then the advantages of this system for them over the centralized systems are tremendous. No reason not to join.
D. ONE CLICK CUSTODIAN ACCOUNTS FOR NEW USERS
Might be done before the above so as to make the account creation easy for people.
J. AD REVENUE FOR POPULAR COMMUNITIES OR USERS
A new way to earn which doesn't involve inflation? Sounds like a solid win for communities. I think @imwatsi has been working on a protocol for this (Hive Attention Token) so his work may be of interest to you as well.
My own ideas:
Proposal pages for communities: Hive Engine recently launched the Decentralized Token Fund contract, enabling the stakers of each token to create and vote on their own community proposals. Would be cool to enable communities to do this kind of governance right from PeakD. After all, a person can be a member of multiple communities and he/she will probably want to participate in their governance.
Liquidity pools & NFTs for communities: Hive Engine is supposed to enable liquidity pool rewards soon. Won't it be cool to let community members participate in DeFi for their community? And what about community NFTs? I don't know if PeakD will want to create such pages but if the interface at least lets people know these abilities exist, it would probably help. Otherwise it creates fragmentation (various functionalities scattered all over the place). And PeakD creates integration.