How much is too big for a battlenet map?

Yah. Anything larger that 1mb better be very good or people will not want to wait for others to download the map. My largest map was a RP that I had help with for the terrain, but everything else was mine. It ended up in 5mb range. Nobody except my former clan [tR] wanted to play it from it's sheer size. I also made a Starcraft map that reached the 35mb mark, and it was 64x64 in size! Reason - tons of 22kb sounds. High-res textures and high quality sounds really take up space.

Once I did a map with my freind together and I worked on it for nearly a year, from ROC to TFT, it was a Bunker Warz and I think it was really great, we had starting cinema, balanced units, hundrets of upgrades, many buildings, many special features, nearly 50 heroes, 4 shops full of special items, I think it's a great map but it was around 1.6mb so no one played or even downloaded it, all left at around 10%...
A tip for all, use Heavylocker to decrease your mapsize, but make a backup before!!! You can find Heavylocker in the Editriong Tools section...

I don't think filesize should rule your mapmaking. also, im making a map that so far is 689 kb.. but suprisingly, it has 12 icons, 1 skin, 1 unit model, 2 unit portraits, and 1 weapon model. I guess thats really all thats in the map besides the terrain and a few triggers... but its really not that high. its all required though. I mean imagine you were making some dinosaur map and a boss was a t-rex.. What model do you use? anything you use will look like total crap.. something i like to use is Risk vs. LOTR Risk (I dont know how to make the lil trademark thing ^_^) half the reason i like LOTR Risk better is it looks so much better. I use DSL and everything dl's fine for me and even if it doesnt ill wait. but unfortunatly most of B.net DOESNT have DSL and they DONT have any patiance so they all settle for Mauls which i cant even begin to express my dislike for.
so if they dont want to wait to play it, they dont deserve to play it.
and skins and models are usually important to the maps plot or somehing.

500k cuz so many dl upers out there. but i do like WOTJ and stuff but it just takes so long for ppl with craup internet to dl it.