Hi Everyone,
Here is a list/reference of upcoming/possible and completed protocol changes/upgrades that have been discussed and proposed by the community and developers (Robert).
In progress
Add Yuan/EURO stablecoins
Thread - [Discussion] Yuan and Euro Stablecoin
Status - Discussion phase. 
Important vote ongoing
Treasury Reserve
Thread - [Proposal] Implement Dollar Protocol "Treasury Reserve"
Status - Discussion phase. Testing ongoing
Adding deflation to SHAREs
Thread - [Proposal] Seigniorage Deflation
Status - Discussion phase.
Increase Rebase Frequency
Thread - [Proposal] Increase rebase functionality to every 12 hours
Status - Discussion phase.
Add Multi-Sig wallet for protocol changes
Thread - [Discussion] Multisig wallets signers
Status - Discussion phase
Add BOND token
Thread - [Proposal] Third Token Addition (BOND)
Status - Discussion phase.
Resolved
Remove USD rewards from mining
Thread - [Proposal] Suspension / Removal of USD rewards from Mining
Status - Vote passed and implemented. 
Hire a marketing professional
Thread - [Proposal] set aside budget to hire a marketing professional
Status - Resolved
Modify SHARE Discount Rate
Thread - [Proposal] Modified Discount Rate
Status - Vote passed. Implemented