A roaming support item
Whe have 4 ways todo the jungle. Why shouldn't whe move to 4 ways to play support. What if whe make some small adjustments to talis and create a new item the is mainly focussed arround movementspeed and health regen.
The new item gold income is design arround stacks over time that you cash in when a nearby minion dies. If you kill a minion this passive is disabled for 8 seconds.
The active for tier 3 could be something like a 2 seconds targeted root to help with ganks.