What would you do to this to make it 'better' through manipulation?
Well... I suppose that what is meant by 'better' and 'manipulation' is really rather subjective. There's the opportunity to apply some output sharpening, at the very least. If you wanted to tweak the tone curve (for a shapely 'S'-curve) you could do that... you can subtly adjust the exposure or white balance if you saw fit.
I mean, if
you are satisfied with the photo as it is, then of course you don't have to do anything to it in post-processing. But I'm sure that if the photo were given to ten different people, they would all process it in ever so slightly different ways.
What I
can say is that I make a concerted effort to capture any given shot the best I can... but I also never 'force' myself to accept the in-camera shot as the final image merely out of principle. Every photograph goes through Lightroom, every photograph gets a certain degree of sharpening appropriate to the content, and many get tweaks in white balance, exposure, and tone curve. Sometimes the final result is only barely changed from the in-camera shot... other times it is much improved.
'Manipulation', which is really just kind of a loaded way of saying 'post-processing', is only detrimental to a photo if the individual doing the processing doesn't have a good enough eye to distinguish between 'just right' and 'over-the-top'.
Bad post-processing is not to be blamed on the practice of post-processing, but the person doing the processing. In the hands of an experienced photographer, post-processing applications only improve and refine photographs.
Those who shoot JPEG are jsut getting a "canned" processing algorithm applied to the shot in-camera... they are letting the software do the work for them. If that works for you, that's fine... other photographers prefer to make the decisions for themselves.
That's where RAW comes in... and if you've ever looked at a RAW image without
any adjustments, at all, you've certainly seen that post-processing isn't just preferable... it's absolutely necessary.