I don't think "intelligence" needs to carry all the intrigue and woo of related words like "consciousness" or "creative." If we just use "intelligence" to mean "the ability of a system to solve problems that are new to the system," that pretty much matches the dictionary definition and normal usage of the term. We don't need to touch messy questions like "is there something it's like to be a bat" to conclude that bats exhibit intelligence when they navigate long distances and hunt for food.