LogFAQs > #946604786

Not sure it's what you're looking for, but I've heard the term "gold plated" thrown around sometimes.
In my experience it's used for a situation where a customer/client wants something simple/specific, and the people designing the solution throw in all sorts of other features and crap that balloon out the cost.

Found this on wikipedia for it:

https://en.wikipedia.org/wiki/Gold_plating_(project_management)

In time management, gold plating is the phenomenon of working on a project or task past the point of diminishing returns. For example: after having met the requirements, the project manager or the developer works on further enhancing the product, thinking the customer will be delighted to see additional or more polished features, rather than what was asked for or expected. The customer might be disappointed in the results, and the extra effort by the developer might be futile.
Gold plating is also considered a bad project management practice for different project management best practices and methodologies such as Project Management Body of Knowledge (PMBOK) and PRINCE2. In this case, 'gold plating' means the addition of any feature not considered in the original scope plan (PMBOK) or product description (PRINCE2) at any point of the project. This is because it introduces a new source of risks to the original planning such as additional testing, documentation, costs, or timelines. However, gold plating does not prevent new features from being added to the project; they can be added at any time as long as they follow the official change procedure and the impact of the change in all the areas of the project is taken into consideration.