Ok, I have officially scrapped the two clunky and complicated rules:
-Tapped blockers deal no combat damage
-Tapped artifacts lose all abilities

After another draft, people didn't like or exploit these. Most players ignored it all, a few gave it attention, and one player tried to incorporate the artifact rule (it was bad). More often than not, it's a feel bad with Masticore or Tanglewire than a feel good with Winter Orb or Su-Chi (you know, typing out the phrase "feel good with Winter Orb" looks like an obvious read flag now...). Using a tapper like Nomad Decoy to undo a blocker from dealing damage (usually defender's choice) is significantly worse than removing their best creature from being able to block (always attacker's choice)

I've also added mana burn. I announced this at the draft and people actually cheered. It never came up in the matches (that I know of), but the nostalgia factor was so strong that it excited people. This is good enough reason to lean into the unique rule and tinker as time goes on.

I have a large amount of edits to put into place, too, about 60 cards. I'm removing a lot of the creatures that have power 4 or greater to help the bodies of the Kavus maintain relevancy. I'm also powering down a lot of the creatures that have higher stats to help make the Kavu beefier and more relevant; most of the cards that were impacted by this decision were bombs, reanimation targets and modern printings. I may also need to cut reanimator concepts as a whole to allow for a more streamlined focus on the highlighted archetypes