Then again... if it is OP, then don't use it. You know, don't download it, don't install it, remove it if it is included in a mod pack you play... no one is shoving a gun to your head and forcing you to play with it, after all.
You know what I like most about TE? Lag reduction. Perfect example would be using the Igneous Extruder as a cobblegen. Now, i could make a cobblegen with a water and lava sourceblock if I wanted, but the IE is a lot less laggy (wow, never thought I would be typing that out...). Likewise, the Aqueous Accumulator is a great low-lag and consistently performing infinite water supply. Sure, there's other ways to do it, but I like the AA.
The Tesseracts are amazing for lag reduction. Not simply having pipes running for hundreds of blocks, but chunkloading those hundreds of blocks for the items to continue smoothly running through them can bring a server to its knees.
I've always been puzzled by people shouting 'that needs to be nerfed!'. In the first place, most mods come with config settings. If you think something is too powerful, you are free to go into the config files and change it yourself. In the second place, it probably isn't the mod itself so much as a synergy between that mod and another mod. So it really seems like by saying 'this needs to be nerfed', you are wanting to ruin the fun of other people... which is kinda rude. Ask for a config option to nerf certain mechanics, sure. But hard-code the nerf into the mechanics of the mod? Kinda harsh, doncha think?