Just about every story device and bare-bones plot in existence these days is a trope in one way or another. It's not about what it is, it's about how you do it and the thought you put behind it. I'd always pick RP with someone who's acting out an overdone "cliche," but are doing it well, before opting for RP with random guy #523 who's doing something I've never seen before-- but doesn't bother to remotely follow the rules of the english language and has no consistency or continuity.
Does that make random guy #523 someone who should be ashamed of what he's doing? Not at all! If he's having fun, that's all that matters. Just as it's within his right to do what he wants with his character, it's within my right to just not RP with him. The only people who  should be ashamed in those situations are the people who actively go out of their way to "give shit" to random RP strangers because they don't like something they're doing with a character that the aforementioned person really doesn't need to involve themselves with in the first place.
I haven't been around the FFXIV RPC for very long myself, but I've yet to see any of that nasty behavior of the latter sort. Do I see people giving their honest opinions when asked for them? Yes. There's nothing wrong with wanting to see something a little different come to the community, and I see nothing wrong with warning that the concept has been very much done (in case you *were* looking to it as a way to differentiate yourself.) But being honest and blunt is different from being rude or unwarranted.
I say go for what you want for your character, OP. If someone has an issue with it, they can RP with someone else. If someone "gives you shit" about it, then don't sweat it and don't RP with that person. The backstory is only one of many facets that make a character. Just because you use a few tropes here or there doesn't mean that you can't still have a unique character in the bigger picture.
Does that make random guy #523 someone who should be ashamed of what he's doing? Not at all! If he's having fun, that's all that matters. Just as it's within his right to do what he wants with his character, it's within my right to just not RP with him. The only people who  should be ashamed in those situations are the people who actively go out of their way to "give shit" to random RP strangers because they don't like something they're doing with a character that the aforementioned person really doesn't need to involve themselves with in the first place.
I haven't been around the FFXIV RPC for very long myself, but I've yet to see any of that nasty behavior of the latter sort. Do I see people giving their honest opinions when asked for them? Yes. There's nothing wrong with wanting to see something a little different come to the community, and I see nothing wrong with warning that the concept has been very much done (in case you *were* looking to it as a way to differentiate yourself.) But being honest and blunt is different from being rude or unwarranted.
I say go for what you want for your character, OP. If someone has an issue with it, they can RP with someone else. If someone "gives you shit" about it, then don't sweat it and don't RP with that person. The backstory is only one of many facets that make a character. Just because you use a few tropes here or there doesn't mean that you can't still have a unique character in the bigger picture.
Always looking for new connections!