Well, I'll certainly at least pull the starter and access covers and take a look at it from time to time. I suspect there was a good amount of lead time between the first crack and the bad situation at the end, but "inspect the flywheel" was never really on my track prep checklist before
I've got my old block back at home now with an engine stand as well. I plan to get that one rebuilt stronger and then drop it back in the car at a later date. Once I get to see the extent of the damage I'll know how much basic work needs doing and whether the block needs to see an engine rebuild shop first (probably). Once the block is basically sane, I'll probably drop in a bunch of upgraded parts for durability (e.g. Nismo oil pump, GTM HD flex plate, custom water inlet/outlet stuff with good fittings and no stupid heater connections, etc). Depending on time contraints, budget, and craziness, I might go further and build it up into something awesomer (e.g. one or more of 4.0 stroker, lots of forged high quality internal bits, dry sump, custom race ECU, etc). Right now the budget picture is pretty bleak while I recover from replacing the engine in the first place, but that will turn around in a few months.