A word for "conceptually clever"?

Question

I'm certain I know of a word that basically means "conceptually clever". A word that tells that something is creative and smart, but not necessarily good or well-executed. The words "clever" and "creative" infer it's something good, but the word I'm trying to find indicates that, while it might be a good idea in theory, it might not be so in practice.

For further clarification: this word should preferably not imply that something is either good or bad. For instance, it should be possible to use the same word when referring to both good and bad ideas that are still clever.

Any idea on what it could be? Thanks in advance!

Example sentence: "I think this game concept is [word], but perhaps you should try something different."

Answer 1

You might be looking for chimerical, which has both connotations (but somewhat negative overall):

chimerical

adjective

1. unreal; imaginary; visionary

2. wildly fanciful; highly unrealistic

A few weeks ago the notion of a classic but modernized and fully realized Metroid game would have seemed chimerical.

You might also consider visionary, which historically (see synonym discussion on the Merriam-Webster definition for chimercal) has a similar meaning and may be more recognisable, but is more likely to be mistaken for outright praise.