One thing I’d like to just mention, crashing is something you should really only use rarely in my opinion. Roblox I’m sure doesn’t like the idea of developers possibly triggering crashes in this way frequently (really probably at all), BUT, (might as well abuse it for the greater good of watching the (at least the exploiter’s) world burn 
)
By the way, kicking them for datastore errors is something I hadn’t thought of and it’s actually believable. Neat! 
(And your anticheat from the looks of it sounds exactly like how I implement mine! I have a policy of never punishing for anything physics related even if its literally something like literally just flying around and noclipping because I can really easily just prevent it from happening at all)
And yeah, that’s always good! Having access to the same exploits others will is the best way to patch said exploits (I know some devs of a game I play who apparently have hilarious checks that check for CollectionService tags called “hack” or something because of this)