Something has bugged me all the time about edges, so I started to analyze them a bit.
First, I arrived at the conclusion that +1 skill rank and +1 RR are essentially of identical value. There are some extreme cases where their value differs, but in most cases it makes no statistical difference whether you roll one die more or you re-roll one failed die.
So I'm thinking about re-working as many edges as possible to be a +rank RRs on (skill).
Because I find edges way too confusing. Some give +1 RR on a skill, some give +1 RR on several skills, but only in certain circumstances, some give skill boni, reduce unskilled penalties, etc.
Speaking of which - reducing the unskilled penalty is identical to giving +1 die (except in the cases where the unskilled penalty reduces you so much you can't roll at all) which is identical to +1 RR. Math: Assume an aspect of 4 (average for scions). With unskilled penalty: Roll 2 die, expected successes: 1. Removing the unskilled penalty raises the dice you roll to 3 and 4 and the expected successes to 1.5 and 2. Adding re-rolls instead means you roll 2 die always, but the expected successes rise to 1.5 and 1.75 - but considering that the edge can now be converted into a ranked edge, you also gain the advantage that you can raise it beyond 2, so you can go further and further. However, the total number of successes you can roll even with the best of luck is capped lower, which I think represents the unskilled part very good. So with a high edge of this kind, you are almost guaranteed to succeed, but at low quality. That's exactly what the edge description leads you to expect.
Then there's the edges that grant bonus to initiative, damage, etc. I've done a bit of analysis (put them into a table) and it's simply a bit of a mess that needs to be cleaned up.
Then there's the edges that grant you physical things, like items (Arsenal, Hoard, ...) or people (Allies, Network, ...) - they're mostly good, but the difference could be worked out more.
And then there's a few edges that are just totally off, some of them granting different advantages at different ranks - WTF?
So in summary of this confused thoughts, I think the edge system is a mess and would profit greatly from cleaning up. That would make character generation easier, but especially the GM job, who right now has no real chance to track all the edges and powers of more than 2 NPCs at a time.
But I'd like some feedback before I put considerable time into this.