Would center channel benefit audio only room?

I'd refine your speaker placement. Most full range, high end loudspeakers will do what you wish.

Or get a tiny room. ;-)

Until you give us more info/parameters of your setup and needs, it's not possible to help.

Kal

As I've posted previously: To paraphrase Sam Tellig of Stereophile, with two channel audio, less is more; with multi-channel audio, more is less (unless you have unlimited resources, and even then the outcome is unclear).

I will say no. Even you use three identical speakers, the position of the center speaker is so different from the left and right speakers, it is impossible to create a seamless blend in.

What a lot of pointlessly decisive answers to a vague question about an indeterminate system setup! Amusing.

Kal