I absolutely loved the old forestry farms. They weren't always the best option, but you could build everything in such a way to run infinitely with the right automation. I liked working on setting up the automation, then just letting them run while I worked on the next project. With the new multi-farms, that was no longer an option. True, the farm will practically run forever, but it still requires input from other sources, which means manual intervention at some point. I had never built one of the new forestry multi-farms until my current world. I needed a better source of seed oil (for frames) than wheat and barley seeds, and I wanted to use the new woodworker from extra trees, so I needed a way to grow the trees automatically. The multi-farm is useful for this, but I don't see myself using them outside of this limited option. I used to use peat engines for everything early to mid game as it was so easy to set up to get going early game, and possible to automate for later game. I haven't touched a peat engine since the new multi-farm was released.
Now with the bees, I see the same thing is happening. I finally am working through the bees. I've spent the last two weeks solidly working on my bees. It took 2-3 days to get my first alveary (after breeding the imperial and industrious) and I was about to increase that to 6 alvearies in the following few days. I like breeding the bees manually without use of the extra bees machines. It will often take 50-60 generations for me to breed in all the traits I want into a bee. With these recent changes, it will require me to use the extra bee machines just to get something I can use for a decent amount of time. It also just adds to the grind of only automating and breeding with pristine bees, and using the troll bees for boosted temporary production. Now instead of being able to keep one of every bee, I will be forced to only keep the serums/drone generating troll bee in a bee house.
This does give an incentive for using the long/longest life trait now, as before it didn't matter, but having some of the bees die off really complicates things. I will have to see if it is worth my time to work with bees now. It looks like ethanol generation and a carpenter (creosote oil) might be the only portions of forestry I use going forward as other mods have offered much better options for automating farms and passive resource generation.
Florastar's "exploitation" of bees brought us the frames and alveary. JadedCat's "exploitation" of bees brought in the trolls.