I imagine that what you are suggesting is a framework of sorts.
I find MDS to be extremely flexible as it is, having a framework would limit the flexibility but might be useful to novice coders or those limited in time.
However, MDS is a restricted form of PHP, it might be challenging to make it without classes, are you suggesting to make a list of functions that do what you need?
For example:
[code]
@vi = item_create('Magical Papaya', 'Food', 'eat,throw');//newItem(name, type, actions)
@vr = item_action('eat');
if(@vr){
echo 'You eat the magical papaya and gain 5 energy and clairvo