Have you ever meet user who like to ask if this or that can be done to change the system? That someone will also like make recommendations to the system. An age old answers to them is always “Time Scope and Cost”. It is usually easy to make suggestions or recommendations without such constraints or understanding of the system. So, how should we deal with it?
The Ignorant User
Some user will always be ignorant and oblivious to the basic of “Time scope and Cost”. For such user, the best way to handle is a detailed SOP (Standard Operating Procedure). With SOP, everything is documented with full transparency. If it is a product constraint, you can also state it clearly. All communication will need to formalise to prevent repetitive explanation with the ignorant user.
The “Want It All” User
There is another set of user who wants every features and yet having non existent scenario or test cases. This is the dreaded scope creep where development team waste valuable time designing for non existent requirments. I often apply Agile and scalable solution to handle such user. Agile allows your solution to scale if the “said” scenario occurs.
In every projects or production support, there will always be users who falls under the above categories. They usually have no understanding of time, scope or cost. You can easily be transparent and show your SOP. Do also consider applying Agile and design your solution to scale easily.