Linked issues with custom attributes

[Maxim Grouchevoi]

Hello community!

As you know in Jira we can create links between issues with different kinds of "dependencies" or "relations". Here comes my question:

Is there an addon or script out there which would make it possible to enrich the linking between issues with additional custom attributes. Let me bringt you an example:

I have an issue which has incoming links (is blocked by) with 3 other issues. Those issues have different "blocking priority" + "blocking due-date" which I have to define during the linking to the main issue, f.e.

ISSUE <- blocked by; priority: High; due: dd.mm.yy; <- ISSUE 2
            <- blocked by; priority: Low; due: dd.mm.yy; <- ISSUE 3         
            <- blocked by; priority: Moderate; due: dd.mm.yy; <- ISSUE 4

Those attributes should be used as an enrichments for the relationship connection. Each issue still has it's own fields "Due" and "Priority", which are related to the issue itself. 

+ Those additional attributes should be visible somewhere and (in best case) can be filtered with JQL.  

I hope you understand my requirement.

Thank you for your help!