Vincentdante
Time-Traveller
Just to set your expectations, I don't want to potentially put you off but it's fair to mention. The first 5 singularities are pretty bad, so don't force yourself if you don't like "waiting to get to the good part" of a series. (Septem in particular is godawful and the writer hasn't lived it down apparently). London was pretty fun though imo, some folk liked Okeanos as well.I agree it still fits the mould as you said, just in a different form. I'm very intrigued by the post-Solomon FGO, and looking forward to getting to it, especially if as you say it's not something you need to sink consecutive hours into. Being able to pick it up as and when on the go with the mobile version should certainly make it a lot easier to stick with.
But if you can reach Camelot it's smooth sailing after that.