Run speed encumburance already exists. Now I don't know the mechanics of it but, I play with a buddy of mine and there are times were running on flat ground or through an open field and one of us will run faster. I don't know if its cuz one of us more blood or if one of is us carrying 2 main guns (one in slot one in backpack) but I have noticied a difference. It's not much but it's there. As far as Yukimare's suggestions to spawning with tools and whatnot that goes back to the classes thing which should stay out of DayZ. I'm a huge fan of here's your bandage, soda and flashlight, goodluck concept. Everyone starts off the same no matter what. What you do with that and how well you survive is all on you and is what Rocket wanted with this mod (at least thats my understanding from reading his posts). I'm open to the idea of skills but it has to be done correctly.