DevianID wrote:So Vaktathi, if you want to say that the rules let you play forgeworld, what about the most important rule? If your opponent wants to play with the core rule book and an army codex, and you bring a rulebook tangentially related to the codex (and its not exactly cheap to get those FW books) are you not playing with more stuff than the normal codex allows? To me, its similar to playing with an old army codex. Sure, it was made by GW, but its certainly implied that you will play with the most recent book.
How is that different to playing a new codex you've never seen before, or a unit featured in White Dwarf (like the Eldar Night Spinner) or bringing an army that's too tough and won't be fun to play against (e.g. Razorfangrunespam vs Warrior heavy Tyranids?), or an army that's just far and away too expensive for you yourself to ever collect (e.g. Mech
IG at ~$1000+ vs Draigowing at ~$200-300) etc?
It's not. None of it boils down to being any different than any other play issue. The units exist in the
40k universe and background, they are designed for play with the codex's and normal basic mission rules. Other than that, it's no different than if people don't want to play against anything in a codex. You can't force Mephiston or 3 Stormravens on anyone any more or less than you can force a Leman Russ Annihilator.