there is no consensus on what the level of warming will be
nor is there consensus on the idea that the changes are harmful/damaging to our interests
There is an enormous amount of disagreement here, scientific disagreement
honest truth is we do not know what impacts are likely to be
None of the above is true - except about the precise numbers involved. The IPCC AR5 report widely surveyed the published studies to date, and shows very clearly and with "high confidence" that business-as-usual emissions will result in a temperature rise of 2 to 4 degrees. This conclusion is not disputed by any scientific organisation, nor are there any studies showing anything short of broad agreement among climatologists about this.
Likewise, the WG2 section shows with "high confidence" that many unique and threatened ecosystems are at "very high risk" once warming reaches 2 degrees, that heat waves and coastal flooding will increase further, that we risk extensive biodiversity loss and economic damage at 3 degrees as well as risking large-scale tipping points, plus high risks of decreasing crop yields and water availability with particular impact for disadvantaged communities. Again, there are no large scientific groups disputing these results, as it is merely a summary of their own published work.
Climate science discussion is so slippery, constantly confusing
That I agree with, if you're talking about the political and layman's discussion. But that is not relevant to the science, where the evidence has been piling up and the debate has long since reached agreement on "will it be bad" and moved on to "exactly how bad will it get?"