My personal suggestion for an alternative to SecuROM would be for all retail DVD copies of the game to be tied to Steam, pretty much like recent releases such as CoD:Black Ops and Fallout:New Vegas. Steam itself is a form of DRM and you are already selling digital copies of "Dragon Knight Saga" through Steam, but with SecuROM embedded as well.
Ugh, no. I think that would ruffle quite a few feathers as there's no benefit for Larian to do so. They've not added DLC (Beyond armour packs on Xbox Live, I believe), there's no multiplayer and they'd not be taking advantage of Steam.
Impulse, sure, I'll go with that as content management, but Steam? I don't really see the point.