Some may pose risks to other features, functionality, or the deadlines. There may be risks involved in not implementing the change at this time. These risks need to be communicated to the client as well. Choose to implement XYZ instead of another function. You wanted to make search results more clear.
Users complain that parsing through the search results is confusing and time consuming.
They can't find what they want and get frustrated. Vary according to solution. Number 1 will take 1 day for a design team. Number 2 will require 3 days from the designer and 6 days from the developers. Use of color to distinguish the results.