large things
-Event Editor
this would be a editor for linking scripts, secrets, triggers, animation and states to the respective link, entity, item or state

-State editor
this would allow users to make their own states for linking to animations and global scripts inside the editor
this would include link, weapon and enemy state

-Sprite Editor
this would replace the sprite editor for link and weapons and misc
it would allow users to make their own animations of any size and link them to states(see state editor)
it would also allow them to define the hitbox for the sprites

-Screen Editor
this would allow you to resize the screen and resize / reposition the HUD
it would also allow you to customize the quit screen

small things
-Link Speed Variable for Zscript as well as in the editor

-A new flag and combo type for LA style bracelet
-A new flag and combo type for LA style pits and water
-A new flag and combo type for diggable ground
-A new flag for LA style knockback
-A new flag for LA style swords //no the spin scroll is not the same
-A new flag for LA style shields

my thoughts
now this might be a big suggestion but overall if it is done correctly and is done in mind of quests that might not be zelda 1 based it will turn out to be a good thing
these editors are not just changes they would allow ZQuest to be customized a lot more to peoples liking and a lot easier too