This thread sparked my interest because I had the idea of entertaining this deck a couple of nights ago:
1.) If you are to run both Reshiram and Zekrom, there is absolutely no reason not to abuse potions, defenders, and pluspowers on these absurdly strong basics. Defenders and potions, in general, should be able to provide multiple turns of additional firepower to your deck through these pokemon. If I were to run this deck, I would most likely save defenders for Zekrom whilst giving Reshiram potion priority. Of couse, this would only hold true in optimal situations (since potion use on Zekrom may be required).
2.) This deck would require a large trainer engine, but this can be further abused through the use of Junk Arm.
3.) A revenge killer such as Bouffalant may be nice.
4.) Tech lines would be incredibly useful and would reserve the heavy hitting for Reshiram and Zekrom.
5.) Some type of energy manipulation would be great, but no at all mandatory.
You may run into some trouble with Donphan variants, but this can be overcome with intelligently used pluspowers on Reshiram.