Just trying to learn here, but if that is so, why do most people like to take the DI signal post preamp and EQ? This seems to be the consensus from what I've read on TB. Also, what does the "I" in DI represent.
Direct Input
Most soundmen will either ask or insist on "pre". They want a flat signal they can shape for their system. The low end boost you added to compensate for your cabinet's rolloff may sound like mush through their subs, or the high end you add for your tweeterless rig may sound like a ball peen hammer on an I beam through their horns. Some of my rigs have effects that need to go to FOH, and there is no way of separating that from my EQ, so they have to deal with it. But I usually accommodate them when I can. A happy soundman is your friend.