Endgame map issue relating to item level

1) If I put T15 map into map device and it has no map mod irridated or corruption, item level from monsters start at 79

2) If I use T15 in map device that has 1 mod of irridated or corruption. Item level starts at 80.

3) The only items I want start at item level 81 and it requires irridated and corruption mods with map T15 for item level 81.

All mapping with items dropping under item level 81, are a complete waste of time and there is no way to skip these... This is going to be a major issue once people get there and things are tuned.

The reason being is that I'm corrupting every T15 and if they downroll to t14 which is more than they uproll to t16. I do not want to engage in the 1 ex trade. The T 14 maps are now useless and better off destroyed as they cannot be reforged since corrupted. I played this way in PoE 1 and accepted it as part of play.

Adding to the problem I now have a tremendous build up of maps in the T15 and T16 range but why would i use T15's to get item level 79 whites to drop in more than half my maps.

Am i missing something?

Whites are more valuable than rares even with the current crafting system if you can get the right item level.

(I am talking about upgrading your gear not partipating in trade)

I understand it fixes the rarity issue because you don't want it on the high level maps, but what about all these maps that are just fill content with no chance to drop anything other than Basetype currency.

I do not and will not have any desire to engage in map trading outside the currency exchange ever.

If extra rare monster % don't roll on your map for these blank maps with no irridated, corruption, expedition, delirium, etc. I have to complete it to kill under 6-7 rares(and some are half that).

It just feels punishing..I hope every map can get modifiers on the Atlas soon. Killing rares just to complete a map that as explained above rewards little is like jabbing a fork in my eye.