Awesome, I got the Z-Saber with my Gold Max Armor! Hey Zero, check this sh...i... oh.
(BAD END)
You expected them to put two Z-Sabers in X3?
Besides, the Z-Saber isn't a "normal" upgrade, it's only available under very specific circumstances (Vile killed early, and playing as Zero against a miniboss; something you ordinarily wouldn't bother with because at no other point is it even possible in the game). And it is ludicrously overpowered, even without the armor upgrade's saber wave, it's still a 2-hit kill on any boss.
That is nowhere *NEAR* the scope of Inti's antics in the Zero-series. The X-series has carried ranking systems for four titles now and at no point was there ever any punishment for upgrades that were a regular part of game progress, like Heart Tanks. In Z1 (and to a lesser extent Z2), Cyber-Elves are your *ONLY* defensive upgrades. Forsaking them is the equivalent of playing an X game armorless with no Heart Tanks. Doable, certainly, but it's senseless for the game to attempt to enforce it as the default, much less to do so by making the bosses pansy out on you if you refuse those restrictions. Ultimate Mode is the only way a fully powered player fights a fully powered boss, making such a feat completely impossible in 3 of Inti's 6 Zero/ZX games. And Ultimate Mode is also ridiculously easy. Whether UM is available or not, there is something wrong with that setup.
The Ultimate Armor/Black Zero in X5 and in X8 are the exceptions in the punished for overpowered mode rule
X1 - Hadouken
X2 - Shoryuken
X3 - Golden Armor
X4 - Ultimate Armor (What, I'm supposed to buy lacking Stock Charge as a punishment? Nevermind that this is already the easiest game of the main series to begin with)
X6 - Same UA/BZ as X5, except Black Zero is even stronger with Saber Plus taking the place of X5's virus busting effect, and UA all the more valuable what with how sucktacular the Blade Buster is.
X7 - New Game Plus chip whoring
XCM - Ultimate Armor/Absolute Zero
Whatever rule you're looking for, it's not in MegaMan. The only X-series game that actually does punish you for being overpowered is Xtreme2's reduction in part slots once you've completed the armor. And even that's more of an exploit than anything, since the head part is worthless anyway (unless you have your heart set on the Shotokan moves), you're considerably MORE powerful by leaving it behind.
Losing Zero in X3 isn't much of a loss, either. He's not accessible at any point after the stage in which you obtain the Z-Saber, and under normal circumstances X would have interrupted at the Mosquitus gate and you'd never see Zero again in that stage anyway. So for all practical purposes you've lost nothing, except for three token non-playable appearances ("Let's split up!", "Used Doppler's program on my saber!", and "Credits jogging"), none of which impact the end result of the story (Zero's still alive, just pending repairs), and one is not even applicable to future ports of the game.
by the time you get the saber, when youve got the gold max armor, Zero is useless anyway, and it SHOWS. Gold max can double air dash, hell, it can air dash PERIOD, amongst things like special weapons, charging them, and less damage... and then a saber wave.
Valid points, but he still has the better buster.