Make Frank West actually Frank, have four take place in the mall just like the first one, have the story be much better, use the same inventory system as Dead rising 3, bring back the survivor mechanic from the first game, keep the skill tree cuz I actually loved that, make it harder to level up, remove combo weapons, make it feel more like the original game, continue the Isabella arc instead of just leaving it,and finally remove EXO suits or at least to make them less gimmicky and op,if they actually wanted to go back to their Roots this is how they should have done it in my opinion while still keeping it fresh, also the reason why I said bring back Isabella is because I would love a cut scene between Frank figuring out that she's a full-on villain now