So what's the overall GAF verdict with no spoilers...?
On a scale of 1-10 for gameplay, story, characters, music, and overall?
I feel like Tails is one of those series where scores won't tell you much. If I was reviewing it just generally, I would have to give it a fairly mediocre score. Like 3/5. Like most tales games, it has problems that hold it back from truly being great.
If you know you like Tales games, I think it's certainly worth a buy. In that case, you already know the issues in general the series has. The bad battle camera and weird backwards decisions like fast travel now costing money might bother you, but the battle system is still fun and the characters still charming. The story is pretty standard, but I'm still enjoying it. I think the music is fantastic as well.
If you've played a modern Tales game, you pretty much know what you're in for and you can make a value judgement based on that. Zesteria takes some steps to modernize, but not nearly enough to recommend it if you aren't already on board. If you've never played a Tales game and can get it on a deal (Like with GCU or from GMG for the PC version), I think Zesteria isn't a terrible place to start. If you're really money conscious, you might wait for the semi-frequent sales Xillia or Graces gets on PSN or for this to hit a sale, but I think at like $40 I'd still say I could recommend this to people looking to try the series for the first time.