None of the WoW Loot cards changed much did they?
And BTW taking some from one random stat and adding it to another random stat IS significant... HOWEVER keep in mind WAR: MMO is a MANY vs MANY MMO. Seldom does one man make a HUGE difference. So no. One person swapping some random stat numbers around isn't huge, but it'll be good for that person from time to time.
If I still had my account (might have to resub after gencon!) I'd be happy to use that stat swapping item!
Well, the WoW loot cards were largely cosmetic, but the cosmetic factors were significant. When someone had a spectral tiger, you took notice -- and that's exactly what they wanted when they got the mount. Same goes for that fishing chair/umbrella, turtle mount, non-combat pets, etc. The WAR promotional items are *typically* much less obvious, with a couple of exceptions. That reduces the craze-factor, so I'm thankful for that.
Honestly though, this is just going to be a "fun" item. +5 to a stat, especially at higher levels, won't provide a noticeable boost. The chances of you getting an undesirable stat +/- are probably close to 50%, depending on your archetype/class and your own personal goals. But, since it's a buff, you can click it off if you don't like the stat combo. The real problem, though, is that the item has a 60 minute cooldown and the buff only has a 5 minute duration (and by definition, disappears on death). So, if you remember you have it at all, I'd save it for situations where death is more infrequent, like an RvE public quest. RvR is naturally unpredictable and increases your chances of wasting that hour cooldown.
Just as a random aside, I'd have to disagree on one person not making a huge difference... several times a day, I see RvR situations made or broken by the actions of one player. Granted, that's exclusive to RvR.
In the end, my best recommendation would be to buy Invasion because it's probably going to be an amazing game, not because of the WAR promo items. They're just a fun little bonus.
I don't know how many people who have commented so far have actually played Warhammer Online, but this seems to be fairly well tied in (not that they couldn't break away). The set-up that FFG is describing is exactly how the MMO works: Empire, High Elves, and Dwarves vs. Chaos, Dark Elves, and Orcs. I'm guessing that they will tie in to the MMO which I feel will definitely be a positive.
I noticed this too -- even some of the art appears to be WAR concept art, particularly the capital cities. I'm sure the intention is to build a game that the MMO players will want to pick up, in addition to the requisite fans of the IP itself. And I'm not ashamed to admit that in my case, it's already working.