Shared budgets are not ideal but they can be useful.
If you have extra ad spend to work with...
It's possible the impression share loss due to rank includes losing out on impressions that the campaign is eligible for but are very broad so you would not want to show for them anyway.
Brand Recognition is a by-product of running advertising.
Testing & Double Checking Existing Setups...
Sometimes the ROAS will plateau...
Conversion Actions - To be able to track a conversion, we would need a "trigger" for that conversion action.
E-commerce Campaigns but built as Lead Generation.