I should start by saying I'm not the GM of this campaign, I'm just the person whose picked up the rules the fastest and the most completely, I also don't actually know much about the Fate setting beyond what I've been conveyed by the GM and other players (I joined the game mostly because I had never tried the HERO system before and was interested).
Anyway, we are all new to the HERO system, and I managed to pick up the rules the fastest, so I've been helping the other players and the GM find ways to build their powers so they comply with the logic of the Fate setting and function within the HERO system, but in doing this I ran into a few road blocks:
- We've been trying to figure out if it's possible to make attack powers that don't require a roll to hit. Specifically in relation to "Mystic Eyes of Distortion" which we've had trouble trying to build in a way that doesn't cost a massive amount of points. For the time being we have build it as a Multi-Power with a handful of abilities related to twisting a region of space in ones line of sight (using a combination of Deflection, reflection, a highly limited Telekinesis that can only rotate things and not move them in any other way), but the biggest problem has been figuring out how to make it work as an attack. It was decided that it should probably be an RKA of some kind (what with it being able to twist any limbs or body parts around a single axis, breaking bones, etc.), but the issue has been that the power, according to the GM and other people that understand it the best, doesn't really "miss" which has lead to many hours of pouring over power adders and advantages seeing if there is some way to make a power hit automatically, without requiring a to hit roll. Is such a thing possible, or would it have to be house rule in some way?
- Next we had a slight issue with making a power related to something called the Imaginary Numbers dimension. The way I had it described to me was that the character can open holes into "Imaginary Numbers" space, where time does not exist, and store objects (and potentially people). I built it using a Dimensional Travel that used the Gates option to stuff objects into or pull them out of wherever he leaves them. It works for the most part, but the GM wanted to have the power work as follows: The character should theoretically be able to make an extremely large opening, but the larger the opening the longer it takes to open it. For the time being I suggested buying the max AOE for what it could open to and using the Extra Time for the max time it took to open that size, and just say that it takes less time for smaller holes, but I was wondering if there was an easier way to do this.
There might be more that I'm forgetting (will post more if the GM reminds me) but for now those are the big two off the top of my head.