Epic God Game: Birthright lite
In reply to Malakhon (msg # 4):
You could customize the DCs and scaling while using the existing powers.
For example, if normally you have only 2 tiers you could scale it up to 5 tiers.
Describe how big/epic their effect is based on your customized tiering. For example, someone with the Earth power still commands earth but at tier 1 they're limited to 5-foot spaces and 2d6 damage while at tier 2 they'd have 50-foot spaces OR 4d6 damage at 5-foot and at tier 3 they'd have 500-foot radius or 6d6 damage etc. I'd have to look at the system to build a scale (it's been a long time for me) but by taking the same concepts and abilities and just creating your own sliding scale of power that you're comfortable with you can tailor the game as needed.
Example:
Tier 1: 10-foot radius (range is x10 radius), 2d6 damage/healing, 1 round duration (save ends early)
Tier 2: 25-foot, 4d6, 1 minute (1 save per round ends early)
Tier 3: 50-foot, 6d6, 10 minutes (1 save per minute ends early)
Tier 4: 100-foot, 8d6, 2 hours (1 save per 10 minutes ends early)
Tier 5: 250-foot, 10d6, 24 hours (1 save per 2 hours ends early)
etc.
ALTERNATIVELY, if you want Star Trek problem solving you can make powers Item-dependent and Situation-dependent where they have to charge up their powers in order to use the big stuff (can't do that mid combat) and their items can be disabled, disarmed, stolen, jammed, etc. temporarily requiring them to try to figure out how to get them back. Whatever powers they do have without their items/charge up time they'd have to use in a clever manner in order to swing the battlefield back to their advantage.
For players with incredible intellect, solving puzzles still requires the right tool. For example, you might figure out 65 different ways to solve a puzzle but all 65 of those require tools, resources, and time you don't have. Typically, a puzzle solved for me is just a bonus to the attack rolls, saves, defenses, you have during the encounter but it doesn't dodge the encounter.