Lol not really...farming for a +5 would take so long just getting the coins that I hardly see it worth it, accuracy might be usefull for pvp, but elsewhere not much, are you going to spend that long just for a niche content that you can do 5 times a day? Up to you ;)
Sorry, I farmed it, and I seriously regret the effort (and mats). Even at +5, you still can't rely on it to hit Vineras and other strong evade units, so what's the point? Bring units with guaranteed hits against evade teams, and spend your time and mats grinding for a more useful item.
Do you guys have a list of requirements on making it to +1 going to +5?