Second, the game is still problematic. It has overpowered options like the infamous taxpertise feats and crippled builds like the star pact warlock. The designers, for whatever inane reason, haven’t seen fit to errata these problems and probably never will. C4 is errata for these problems.
... *snigger*
*snort*
As a person who is a power gamer, a DM for a burgeoning group of power gamers, and a Warlock fan, I can tell you that Star-pact Warlocks are not crippled. They are... if you build them wrong. Then again, a Fighter with 14 strength and a battleaxe isn't doing to well either. A Cha-Based Star-pact Warlock can wipe the floor with people. Particularly those who multiclass Wizard and go Doomsayer. As far as Warlocks in general go, they don't out-damage Rangers and while you can min-max their at-wills into 100+ DPR range if you know what your doing, they actually tend to have rather shitey nova potential. Of course, when you can stun-lock Solos, damage really stops being an issue.
As for the "taxpertise" feats, those are so painfully easy to deal with I'm surprised you take them as a big deal. 5, 15, 25. That's it. Or heck, just give the feats "for free."
I can't really comment on anything else as the links have been removed, and it seems with good reason. Copyright infringement is not cool. Though, considering the problems you chose to highlight I doubt your house-rule pack would be of much use. The people of WotC spent years designing 4th Edition and have further spent a great deal of time analyzing new data as it comes in, constantly tweaking the game as it goes to improve it with each step. They are professionals and some of, if not the best in the RPG industry who have consistently put out a good product. To be blunt, your some dude with 3 posts on an anonymous online forum claiming you can do better, and who, going by your hot-button issues, does not seem to have a good pulse on the metagame at all.
This does not inspire confidence.