Well you might come unstuck with the cross platform support, I think web forms stuff will still depend on System.Web. It's well worth cutting your teeth on MVC if you can, career-wise. The only web forms jobs I see these days are the shitty ones where you have to maintain someone elses codebase they wrote 10 years ago
My stuff didn't have a spell editor, it was all NPC, merchant list manipulation, and items stuff. If I get time to run a server in the future I'd resurrect it.