The link UI could use some design tweaks to bring it line with the evolution of the interface:

• Update the "return" icon.
• Update the circular + to the now standard black [+].
• Revise the lines: should they be darker? Should they be equal in length?
• The "create new page" flow only happens after search has finished. Should it be shown sooner or does it risk too much in terms of possible conflicts? I think it should be shown immediately.

Suggestion for icon: