At 75cap, there were really two things holding sidegrades back:I agree that a lot of those sidegrades didn't help, and the few that did were a little too helpful, such as Homam giving Haste to PLD and changing the game entirely.
- The first "endgame" gear was really really good all around, so sidegrades were pretty much impossible. Osode, Haidate, and abjuration: how do you top that?
- Post-Zilart, stats on gear were apparently determined by random generators.
When it comes to gear and sidegrades, S-E really needs to take a page from Valve's book and set up a test server. Not an internal test server, but something that actually puts equipment in the hands of the most ruthlessly efficient people you can find: the players. We have years of experience in breaking games and finding exploits, so let us try out your new equipment and break it for you.
Rune Chopper required a supply of yag juice to be used effectively, but even Sanction in ToAU was enough to keep it going 50%. You are right though that its effective period really only came much later in the game when Refresh was common, but it was still a very effective weapon if you were prepared to keep Refresh on.
So let's change the subject. Ares' Flanchard. Decent pants for WAR, with +DA%, STR/DEX, and Set Bonus: +DA. The drawback is that they're not Byakko's Haidate. Obviously if you have both you'd TP in Haidate and WS in Ares, but if you couldn't gear swap then what are you going to wear?