I have to agree with Riley here. SAM's LB is anywhere near as OP as people make it out to be, and this is coming from a PvPer whose main Frontline jobs are heavy on AoE (DNC and DRG). If the game forced you to tab through every enemy to figure out what job they were, I would be able to understand where people are coming from. But Frontline gives you enough information you need to stop yourself from making bad plays. Even in a crowd, the blue/yellow/red text that clearly says 'Samurai' is hard to miss.
"I didn't know the SAM was there" or "I shouldn't be expected to sift through the crowd for a single Samurai" are quite frankly unacceptable excuses. The latter is a skill that should be expected of
every Frontline player regardless of whether or not SAM LB is in the game. You need to be able to sort through a large crowd and identify at any given moment who the ideal kill targets are (i.e. who in the crowd is playing the squishiest jobs, and who is being targeted by your team) so that you can help your team secure kills. If you are already doing this, then keeping an eye out for those pesky SAMs should be second nature. If you're firing blindly into the crowd, then you are just padding and that's a bad habit that needs to be worked on, SAM LB or not.
It's also extremely unnecessary to just not use AoEs ever while a SAM is present. Even the jobs who are at risk of accidentally hitting into Chiten the most have different ways of dealing with it:
- DRG can simply reposition+reangle their line AoEs so that it misses SAMs (mouseover macros really help with this)
- SMN can put up barrier when dropping Bahamut, as well bind the SAM so that it stops them from using LB.
- DNC's Honing Ovation comes with a small party-wide barrier that can save yourself and other people from getting OHKO'd (and it is hilarious when it does happen)
- DRK can LB if they accidentally pull SAM into Salted Earth, which doubles as juicy burst that their team can follow up on. Failing that, they can TBN, accept that their setup is ruined and get the hell out of there.
It's also not the end of the world if you get Kuzushi'd - you can run towards the SAM's blind spot and pray that you're out of their field of view when their LB does go off. Or, if you're unfortunate enough to be the target, run away from your team, save them from getting OHKO'd and think about how to avoid getting hit next time.
Comparing SAM to MCH is also inappropriate when old Chainsaw was complete RNG with zero counterplay. Sam's LB is nothing against players with situational awareness--hell, even against players who somehow hit into Chiten, it still has many points where it can go wrong. I hate using the phrase "git gud", but a predictable LB that leaves so much of its power in the hands of its enemies should not be the target of nerfs. Especially not when there are more broken things in Frontlines lol
SAM LB is not an AoE between you and your target. You can test this out in Wolves' Den:

If you stand where the arrow is and target the circled dummy, you'll notice the two in front of you will not get hit by Zantetsuken.