Why do 1000 trades?
Is there any benefit of doing a trade apart from getting the traded pokemon. I read something about getting aditional candy for the mon you traded away. Is this right? How many candy will that be with the highest friendship-level? I don't need 1000 pokemon from other players, so is a trade actually a way of exchanging/buying candy for stardust? For that to be efficient it should be more than 2 candy to be better than waiting for double candy for sending it to the professor. I don't get the hype.
Also IVs. At the highest lvl of friendship...will there still be a reroll so that IVs could eventually be getting worse. I read that there would be a way that IVs could get better but it really would be a pain if that would be dependant of luck, essentially eliminating trades of good pokemon and really just making it useful for collectors of shinies and regionals...thanks for your answers!
Answers
You always get 1 candy for the pokemon you trade away and it increases to 3 if there is at least 100km distance between the catch locations of the pokemon being traded. It seems this does not increase with friendship level.
Trading is candy on top of transferring. If you're farming candy, you would naturally make the trades even so that both sides get an equal amount of chanseys/bagons/beldums etc in the end, which they can either transfer or hold for double candy.
I can't stress this enough, 100 dust for 1-3 valuable candy is a completely broken exchange rate. We're talking about catching one pokemon to generate the dust that buys you 5-15km worth of walking.
It has been confirmed by Niantic employees that the reroll is still there for best friends. It is entirely dependent on luck, so you don't want to trade something that's already good because it's a risk.
Keeping daily interactions helps with the raiding attack bonus. I just fought another Discharge Jolteon, it is really hot here but game weather has been windy. Did level 37 Groudon, level 25 Groudon, max Dragonite, 3500 Rayquaza, level 25 Groudon. Started at 173sec and missed it by 3 or 4 secs.***Now I had time to look at it, my dragons would have won it, especially leaving the level 25 Groudon off
There was only 5 min left on clock after that first loss, so I hot spotted to not risk losing. When the two were in I could clearly see where the buddy attacking icon is next to the number of players in lobby/battle. (I've only solo'ed things since trading came out, but local friends a big part of the new mechanic)
Also, something worthless to you might be gold to a player that is good at the game, but just doesn't play all the time. You can be a friend/mentor to that player instead of transferring it. I'm just getting an idea of what the IVs do, but I've seen them slightly improve on rare occasions.
cleaning out recently hoarded larvitars from the CD means that you can double your candy.
Once the price is at it's lowest point, there are some definite candidates to swap with a friend for IV reroll and a bonus candy each, before going to the professor.
Chansey, dratini, larvitar, bagon ...I am sure there is something in your biome that is worth a handful of stardust to get a candy.