It's hard enough to predict what the shakeup will be when one card is banned, let alone two cards (unless you're psychic, like the people who make these decisions apparently think they are). So while I really don't know, my first instinct is that B/R Reanimator isn't in danger for now. It theoretically gets a boost from the disappearance of prominent maindeck Deathrite Shaman, but other archetypes also exploit the graveyard. If there's an uptick in Loam decks, players will bring graveyard hate to counteract that, which incidentally affects things like Dredge, ANT, U/B Reanimator, TES, Nic Fit, and of course B/R Reanimator. Even the Threshold creatures and Delve creatures are vulnerable to graveyard hate. But there are a lot of variables. Maybe they'll ban something else. Who knows?Every time they ban something in Legacy, it makes me afraid that my deck (B/R Reanimator) will cycle to the top of the heap and get something banned, thereby pushing me out of Legacy forever.
The Deathrite Shaman ban is totally format-grooming and that's frustrating. But Gitaxian Probe sets an especially bad precedent. The sequence of events was as follows...The ban smacks too much of format grooming and I just don't think that's appropriate for Legacy.
Phyrexian mana was definitely a mistake. But Legacy is a format full of mistakes. That's the point. The only mistakes I want banned from Legacy are the ones that are so over-the-top that they'd take over the format. And really, there are still some cards currently on the banned list, which have been on the banned list since the inception of the format in 2004, and which have consistently been safe unbans. Earthcraft has been illegal in Legacy for almost 14 years. It could have been safely unbanned at any point along the way. The usual excuse was "WotC doesn't pay attention to Legacy." And that may have been true. But now, they are apparently both paying attention and taking an aggressive approach to banning cards. After all these years, I didn't think Legacy would get the same invasively curated approach to card bans as Modern, because if they were going to do it, they'd have done it years ago. Now I'm worried that they're finally getting around to it.I will say this about Gitaxian Probe, Phyrexian mana was clearly a mistake, and not just a power level mistake. It undermines the two essential (according to MARO at least) features of Magic, the mana system and the color pie. Unfortunately, that mistake has been made, so the place to fix it is not the Vintage/Legacy banned/restricted lists.