The whole point of using Skeletons is that you can lay back and let your minions take the hits. With this build, the mages will lay back with you so the monsters will tend to find their way to where you are.
Well, on a Fishymancer, the skeletons (and Merc) do two things:
1. They do take hits, forming a form of movable and powerful Bone Armor.
2. They help you get your first few corpses to start exploding stuff while monsters are Amped. Maxed CE is monstrously powerful. A few blasts of maxed CE on my Summoner do more damage than my skellies can put out in the same amount of time. Then their job is to get more bodies for me so I can make things messy again.
If you just wait for skellies to kill stuff, can take a while if you're not using "Infinity," "Beast," etc. and many other items to boost the heck out of skellies. CE, though, is powerful no matter what you have once you slap an Amp on enemies. LR too will benefit CE because it'll lower enemies' resistance against fire. You can also add some fcr to explode corpses faster, creating more corpses, more explosions, etc. It's pretty sick. :thumbsup:
Second, I think it's not a problem if enemies are running toward the Necro and he has Merc, Golem, and lots of little Magi running around. All summons/hirelings are viable punching bags for enemies, and if they draw in enemies, it's their doom, not yours once you start the CEs.
On my Fishymancer, I *like* it when my Fire Golem draws enemies toward the blob, so I can get the fights started faster.