You'll need to download and install ollydbg32, open s2logic.dll, proceed to offset 0x102A9E68 and edit the skill progression table. The values are represented in HEX)
The graphics are much better optimized than Sacred 2. I've had no issues running it maxed out, but you can adjust all the graphics settings to improve performance.
Maybe it's possible to somehow make a lot of tabs in the chest (larger inventory). So that you can collect collections of beautiful outfits and weapons :)