In my opinion Gendustry is a bit underrated. It's a cool addon for forestry, and I know it's OP, but you can nerf it. But in my opinion it is a great mod, if your playing with bees from Forestry. Another mod which is also underrated in my opinion is Magical Crops. You can make really cool things with it. A good example is the Regrowth modpack. Magical Crops and Botania are mixed together and this is working really good. And Magical Crops is not that OP, because normaly the drop rate of Essence Seed, and extra seeds is low. So you need to mine a lot of essence dust to make new Seeds. But when you have some seeds, you are good to go.