I also agree with the other users, no offense to Enno since I also like his art. but both styles are great. I personally think you could strive to finish this one without loosing the style and perhaps consider collaborating for another project. or have Enno stick to your style and he would help with finishing details.Only the art will be done by Enno, the story and the rest will still be done by me. I intent to follow my original vision but if I did everything by myself it will take years. Having Enno draw for me essentially cuts the production time by half.
Hope you understand, Yeay!
I think preserving the integrity of this game then collaborating on a next one would be really great since I also agree with you that Enno's art is great and he would really benefit with your writing.