Is there an option to link to a Knowledgeable article while composing a response to a ticket? Is something like that on the roadmap? I mean something like a dropdown where I can search knowledgebase articles while composing a response to a ticket and then select it to have it linked in my response.
Link to knowledgeable article while composing a response
Not at this time and yes on Feature Request List for possible future development. Doesn't mean it'll ever happen just a requested feature.
At this time you can add KB article links to a Canned Response and search/link them that way.
Cheers.