There's probably a half dozen tweaks that could be used either way, but the biggest issue to me -- that is both overpowered and outright game ruining, is the JLI.
EDIT: to clarify what I mean by game ruining, I mean that's all I pretty much see now, to the point that it's super stale. Blobbing has always been an "issue", but JLI blobbing is just an incredibly frustrating experience to deal with, and a monotonous one to use.
