Understand the first and last UTM params of every lead on Hubspot -
These would be found in Hubspot properties Original source, Original source drill down-1 , Original source drill down-2 and Latest source, Latest source drill down-1 , Latest source drill down-2
Be able to see the key pages the leads have visited like pricing or product pages etc -
These can be also tracked using Hubspot and you can have an alert from workflows on slack whenever a lead visits key page
Know the page where they converted -
can be viewed in Recent conversion property in Hubspot
Connecting user behaviour data from Amplitude to Hubspot to segment users-
native connector is available you can sync data to multiple properties
Fine-tuning the lead scoring -
Can be set-up in hubspot
Understand if we should be tracking anything else - depends on business use case, there could be multiple things which can be tracked
Hope these will help
@Jacob Koshy
The above assumptions would work only if Hubspot is connected with your website and forms