When it comes to infernal mobs, I'm kind of teetering on the edge of the line between keeping it and getting rid of it.
Infernal mobs is cool for more combat-oriented players, who are used to minecraft's combat system. For others, like those who favor a less combative game, who aren't as good at minecraft's combat, it can be pretty down-casting. And for those who are on the edge, such as myself, it can sometimes be a cool thing, or it can sometimes be incredibly annoying. Especially when some of those mobs are skeletons with a wither effect and a large amount of health. As skeletons can be hard to avoid, such enemies usually become rather annoying very quickly, as they can easily make or break your game, even with grave stones involved.
BUG REPORT
Also, I would like to report a glitch I found while in the nether:
So, I made my nether portal, went into the nether, and was immediatly attacked by one of those floating skull things. No big deal the first time, and I dispatched it with realtive ease, but when I came across the second one, it finished me off. So, I spawned back at base, put on my back-up armor, and other back-up gear, and went back to the nether. Unfortunatly, I was ambushed right from the get go, and instantly died because I had already lost half of my health by the time my game decided to render what was around me. And I died again. The third time, it wasn't there (apparently it had gone through my portal the moment I had gone through it myself). Yet, when I broke my grave, only a small portion of my stuff was there. I was on fire at the time, but the fire didn't appear on any blocks, meaning my items wouldn't have caught fire or been destroyed. Also, I somehow had some of my items split between two different grave stones, and even then my stuff wasn't all there. I was missing some of my boots (which was in very good condition mind you), my tinker's construct pick, my backpack (and all it's contents), as well as my plastic bags, and several other key items I had kept on me. Also, when a ghast destroyed my portal after I came in a fourth time, only 5 out of the 6 portal blocks were destroyed, and I was unable to relight the portal to get those back. So yeah, that wasn't fun.