The thing with MUGEN is that isn't so much hard as it is user-unfriendly. As far as I know it's still all text file editing. Unless you get a 3rd party editor.
Homestrife will be bit easier to work with since the official editors(what we will be using) will be available to the public. A crapload of work will still go into making a character(or stage) though. You still need to make all the art/animations, then import them into the editor, then place all hit/hurt boxes and apply all the variables for damage, armor, stun, etc. A lot of super tedious work.
Homestrife is probably gonna windup being this SSB version of MUGEN since with the tools available, people will be able to make and add whatever characters they want. Don't think we'll allow menus and stuff to be editable though(unless we actually eventually convert it to a MUGEN style editable engine...), But I digress.