Maxed it out last night and tried several builds in the Simulacrum against different armored enemies. The damage output by itself can absolutely soar. However, against armored enemies, the Furax doesn't have enough status to truly take advantage of the Evolution effect that gives +40% chance of slash procs on impact status. I tried pure status builds, pure impact builds, along with my usual balanced builds. Anything I used had a much slower kill time compared to prime weapon that were slash oriented or even something like Hate with 7/8 mods equipped. I even have a magnetic Kuva Shildeg modded for Electric that did slightly better. I think a reward from grinding steel path enemies, spending a decent amount of duviri resources, and unlocking each evolution - should be competitive with something like the Hate. That you can get super early in the game and from the normal star chart. Sorry to focus on the Hate but it was something I was messing around with at the same time. Basically, the other Incarnon melee and prime melee vastly outperform it, because of the slash procs.
If I could suggest some ideas, maybe an innate "shattering impact", higher status effect, increase the slash chance from the evolution to like 65-70%, or like triple status damage. I personally like the feel and style of fist or sparring weapons, but longer reaching weapons with higher status chance, and higher slash weight will be the "go to" melee weapon unless something is done.
