Krenov sculpted his planes to his liking and use, I would hazard to say he would expect others to do the same. Just because you’re making a plane using Krenov style construction does not mean you have to copy his designs. When he made a plane for someone, you got it unfinished in terms of final shaping. Like any tool, it has to be comfortable in your hand or you are not going to use it. So, add a horn or traditional tote if that works for you. Krenov took his cues in making his planes, if I remember correctly, from period German style planes and then put his own twist on them to suit his needs, you should do the same, some great suggestions have been given earlier in this thread. I’m sure you will find something that will suit your needs an as long as it keeps you woodworking by all means go for it. I enjoy wood using wood planes, especially for smoothing, and for green woodworking they are a must for sure.
Krenov respected wood and believed each piece should be made the most of. The majority of his case construction was veneer work due to that philosophy, so there was not much need for wasting large amounts of wood, and the scale of his projects were much smaller as well. He put forth a lasting design style that is unique pulling from Scandinavian, Eurpoean and Asian influences that stands on its own, collected by Museums around the world, and he had a strong desire to pass along his knowledge of woodworking. He wasn’t paid by an employer to build things, he was a successful craftsman on his own, with his own style and woodworking philosophy, which is difficult for any artist to accomplish. Whether you like Krenov’s planes or his furniture design style, is certainly up for debate, his influence on the history of woodworking, not so much.
"The real voyage of discovery consists not in seeking new landscapes, but in having new eyes." - Proust