Couple ideas

[Winter]

Loot chance according to map's difficulty.

I don't think that could be implemented just on the fact that each map will need to be tested before it is released to the public and be give some number on the amount of time it takes. 

Other points are no map has 1 place to cade we the community normally find the quickest way to do a map and keep on using that area of the map even tho there are unlimited options. 

Could go on but I like the idea but I seem to hard to implement. You are maybe on to something here but rather than giving a map a number may be a timer for the run would work better however that could be exploited quite easily. 

idk I'm sure there is something hear maybe I will think of it 5mins or 5 days after I post this. 

I do agree with you. It might be hard to create maps in the new way, although at least one map is possible.

I'm not a fan of arbitrarily assigning "difficulties" to maps and basing loot chance off of that on principle. There is a lot of room for bias and error, and it is unlikely to get people that agree on difficulty. I also don't think this would solve the problem you are citing. Instead of spamming the easiest map, people would spam the map that has the best ratio of difficulty to loot modifier. I'd rather there be less maps total that have more unique features that make them appealing to different team compositions.

Changing legendary items drop, to legendary items tokens

Not that big of a fan of this but maybe like the other one could be on to something. My guess the best way to keep people happy on both sides is probably just have more events where you can win them tokens but i would say this it's already happing as the devs are planning to do that.

Keeping legendaries and tokens? why not

I personally like the idea of legendary tokens, but I can also understand liking getting the item directly. I don't think this is likely to change in the near future, but as Woody said the Developer team is working on making more events that let people win the less-dropped legendary items.