Unless the player is level 80, FGs are mechanically tougher than T500 decks. I think he said that a certain number of consecutive wins would allow for spins with only rare cards on them, as far as rewards go.
Well, the top50 are well within the score range (myself included) that would have mid-60s for points (at 230k I'd be at 68 on that chart, and I am not in the end of week t50). So probably 15-20% are going to be 60+ points.
In my case, 68 cards buys me: 2xdraw, 3x mark, and 36 upgrades + 2 oracle upgrades and 180hp. That's about and 20hp short of an fg, and if that wasn't limited to 2x I have enough points to go beyond that also with minor adjustments. So yeah, maybe not as tough as fg's mechanically on average, but fairly close. Toss in a couple hourglasses and they might give rainbow a run for the money though. Also, it's not like fg's use sog's, but you can bet 7/10 t500 will be and the ones that don't will be more lethal without em.
I'm picturing this like being a list of the fg's, without the fun ones. I don't think anyone is going to make a the sort of decks like Neptune that are both easy and spin enough rewards to make fg's worthwhile.
I didn't know what the reward was, so if it ends up being for upgraded cards or something like you say, it might end up being worth it. But the unupped cards will have to be converted to upped during spins, or you'll end up with the same spin problems that half-bloods have. Even then, I'm not sure rare spins every time would be worth anything if people use decks without 6 copies of cards. A 60 card deck with 15 different cards in it isn't going to spin anything, rare or not. We know from existing t50 that if you want people to actually spin things on a regular basis, you want to have 4 card types or less in a deck. We see that with the fg's as well. The good fg's spin wise don't have many types of cards at all. I'm thinking most of these t500 won't be structured in a way that actually gives good spins. That might not end up being the reward it was intended to be.
Now, it might be different for new players who don't have a full set of shards/rares and have nowhere else to get them. To me, fg's/t50/t500 is just electrum, so maybe that taints my view. I'm also assuming here that the t500 will be motivated/required to make decks designed to kill. I take it all back if they end up putting the same sort of farms up.