Damn, your hired! lol. I hate drywalling which doesn't even come close to what you just tackled. That was a mess, nice transformation. The closest I've ever come to that was having a foundation crack, chiseling it out enough to get waterproofing cement into it and resealing the wall with waterproofing paint.

I know what you mean about stuff that hardens faster than you can use it. I decided to use Bondo wood filler where tenants would manage to let shower end up flowing over the edge and keep rotting out the drywall over time. After years of continually replacing the drywall I got the idea of using the bondo. You have to mix fast and apply and sand within a reasonable amount of time, even sometimes that doesn't work out as intended, you end up wasting a lot of product, better to do it in smaller batches. It's been years now and no rot though, so it was worth it. So worth it I did a bit further up near where the shower surround meets the tub. Time consuming as sometimes you have to fill in a gap and let it dry before reapplying more, but it saves one a bundle of time from having to constantly replace drywall.