I am totally NOT against bees giving some basic iron\copper\tin\redstone, for the reason that you may take advanced drill and dig straight tunnel for well 5-10 minutes. Chances of you finding one of those veins goes to somewhere 70%. With adv drill, you can get manymany stacks of that resource and after processings you get double-triple the amount. Bees for this purpose are practically an alternative "machine", which functions and is needed on present level. Like an early forge hammer - its not critical, it takes resources, but is nice to have. Next thing - after ~HV, all 4 resources are required in massive amounts. Iron is for steel and pellets, copper for annealed copper for cables (some machines require many stacks of copper wire), redstone for chrome and tin is for cells of sorts. This game part kinda turns into very clear grinding, which GT and this pack usually don't have. Bees kindly allow escaping that grinding and allow entrance into that mod at a very good time - almost right you start needing them for production and when you can afford pretty much anything needed for this. Thats why I am not against copper-iron-tin-redstone. Mostly anything above this - crosses out one or another stage in gregtech. Bees are simular with RTG pellets\steam, which dont give much, but give always and are everlasting, need only primarily investment and their contribution with some time is noticable. Having bees with that concept is what is most balanced (in my experience) regarding what we have HERE in the modpack.