Agile do not support more than 1000 attributes

For changes in work order, close loop with introduction of deviations in agile.
Deviations are meant to track disruption or changes without altering revisions.

This formal process helps to identify all types of devations

• Part deviations
• Product deviation
• Supplier deviations
• Supplier part deviations
• Manufacturing deviations
• Manufacturing process deviations

It is a million dollar question.

As you know that IOT has multiple capabilities,

• Edge computing
• Integration with ecosystem
• closelooping of IT and OT with engineering
• Enabling analytics for enterprise change management
• Lastly, mashable applications for self service application 

Agile PLM is old warhorse good for driving wagon in enterprise applications.
Oracle positioned cloud PLM  as digital PLM for IOT.

I Agree with Matt, Agile is not used for managing equipment BOM and Parts Link. Hence, Document BOM is separately managed and has peer to peer relationship with Part.  In Agile, Document management feature. Document objects are used for managing Quality processes, Manufacturing Process, Assembly Processes, Work instruction.  all document of various categories and types are classified in Document BOM,

check whether you have read, discover privileges for MCO and Item objects?

promotional items are added as options in SKU. this BOM is managed in PLM and it propagated to ERP. Biggest advantage is BOM alterations are avoided.

Leverage PRODUCT CHANGE NOTICE process to restructure catalog. 

Capture old part number in an attribute as historical reference, while creating new MPNs or Internal Part numbers.

try using $usergroup and map the usergroup in the workflows for any change.
All the users belong to the usergroup.

Good idea, other PLM  will provide more indept insight. Compared to Agile PLM.

By far, Agile PLM strategy does not address in areas of systems engineering. Design centric initiative will provide insights and address gaps in agile plm.

Manufacture must be present in agile. In Agile items are linked to Manufacturer part through Manufacturer,. 
There is no direct link with Item and Manufacturer part number.