We've been told that defenses and attack bonuses go up at 1 for every 2 levels. So there's your fix.Bagpuss said:"Skill level rises with level" this implies to me they are probably going the Star Wars SAGA route perhaps with a fix.
There is an issue with SAGA with skills only rising at half level, but defenses rising at one per level. This means if skills are used against defenses you actually end up getting less likely to succeed as you increase in level. Maybe they will have skills increase at the same rate.
We've also been told that the SAGA system was simple because that fits Star Wars, but that D&D will have more detail. So expect some extra skill options.