As with most things, "crazy" is relative. Want also usually trumps need. But I know that in my mind, 3600 bucks sounds a whole lot more like N+1 than it does electronic shifting and more bling-y tire holders.
Considered a gravel bike at all? CX? Fat bike, maybe? Your upgrade budget is within striking distance of a Checkpoint SL6. Start looking at 105 equipped and you could be taking home two bikes.
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