Very correct, Hubert, I 100% share your thoughts on that.
I've also said that to the Coria fans in his forum some time ago and he absolutely gets my credit for doing that and getting results on hardcourt and grass last season.
You must just think of this situation that the guy was coming off the disappointing French Open Final, then he moves on to such an exotic surfaces, which grass certainly is, and gets a 1st round loss against a #200 ranked player. You would in most cases think that he stops playing now, but he didn't! Instead he moved on the next grass tournament and made the final beating some respectable grass court players like Clément, Beck and Ancic.
to Coria for doing all that
You cannot ask for more than at least trying, and with him it already was a very successful try and I think he can even further improve this.