Drop Rate for Creeps, Creep Respawn (RPG)

I want certain levels of creeps to drop certain types of items.
I know how to create an Item Table containing percentage of item drops and such. I also know that you can just click on one unit on the map and make it use the Item Table that I have created. However, once the unit respawns, they do not drop the item ever again.
Is there a way to utilize the Item Table with a trigger?
If so, please, show me how to do it with GUI, not JASS.

Also, it's relatively simple to create a trigger that respawns a dead unit at the position of death. However, is there a way to create a unit respawn at where they were placed?
I know it is possible to do this with regions. However, I would have to create great numbers of regions to do this and will not be very nice.

And one more question. Is there a way to make a creep wander? I know there is a Wander (Neutral) ability. However, once the creep recieves a damage, it runs away. I want it do wander like the ability without the running away part. (I just thougt of this but maybe changing "Stats - Can Flee = False" may work?)

Your contributions will be appreciated.
Thank you.

To wander, would have to use neutral extra / neutral victim (lacks the hard-coded AI of passive / hostile)

for respawning, i do belive you are out of luck. there may be some form of trickery / magic that i've long forgotten in my absense, or never knew existed.

for items, i have no idea. never came up for me, but im nigh positive that it is possible.

Sorry i couldnt answer all your questions effectivly.

for respwaning use one of the systems here or go around n make lots of locations n check if the unit units and so on. (Just change the colour the reigions)

Items you've to trigger it bascially making an trigger if the unit dies n so on

The option yr talkin about is the right one. Prevents them from running if they can't attack back

-Av3n

however, neutral hostile units camp. which means when they are attacked, they automatically go to their camp location. (usually their spawn point)

neutral passive also has some weird AI quirks, as far as i know. the other two neutrals however do not. (AFAIK)