Lord Tirian said:
What about shifting dailies to encounter powers, encounter powers to at-wills - or vice versa (depending whether you want to penalize preservers or empower defilers). Would represent that difference pretty well - preserves would cast their spells less often, because they don't get as much energy as defilers.
Cheers, LT.
A preserver wizard having no at-will powers (they've all become encounter powers) would really suck. On the other hand, allowing defilers to cast encounter powers at will and daily powers per encounter would really make them powerful.
I would go with flavor. Defilers defile and preservers do not. Defilers are obvious, get noticed and are hunted by just about everyone.
If a mechanical difference is necessary, I would allow defilers to take feats to get bonuses on spell attacks, spell damage and/or effects (+1 burst/blast). Allow defilers to build up their power over time in ways that preservers can't. If it requires taking a feat then presumably preservers would be improving in other areas, just not in the same way that defilers can.
Since we haven't seen the rules yet, we don't know if any of these house rules would work in 4e.
I would be disinclined to include anything new to the setting that didn't really fit my notion of what the setting is. No tieflings (no real infernals in DS) and no paladins (no struggle between supernatural forces of good and evil). Dragonborn are a good replacement for Dray.
I like the templars as warlocks. I also like the elemental clerics. They draw power from the elements, not from gods.
I would prefer to keep as much of the original flavor as possible, changing only what needs to be changed to encompass the new edition. YMMV.