We absolutely need this sort of feature.
Here is why:
If you are stuck you could buy/trade guest goods FS/wholesaler in small quantities and for buying these goods you would need to 1 KP+ per trade.
With implementing this feature you wouldn't need to build as many guest race production buildings.
You would be able to buy/trade small quantities of goods to continue main (ambrosia, Night essence etc..) production and you wouldn't lose so much time waiting just because of 1 single "good" missing you need to wait 10h or mess up with your sleep pattern (Like we still have to if we want to participate in tournaments!)
Guest race "goods" would be available in wholesaler/tab "guest_race_name goods" when you upgrade portal to level 2+ and for current chapter only.
WE+ refined T1 goods would have boosts as normal but these boosts would be based on one of current on non-boosted relics.
something like:
(with example offers and ratios)
Dwarvens:
wholesaler only - you could only take up to 10 offers per day
copper : 10, 25, 40; 1 copper : 12 T1 good + 1 KP per trade
granite: 250, 500, 750; 1 granite: 35 supplies + 1 KP per trade
Fairies:
wholesaler only - you could only take up to 10 offers per day
sunflowers 100, 150, 200 ; 1 sunflower : 50 coins + 1 KP per trade
velvet : 50, 75, 100 ; 1 velvet: 3 silk + 1 KP per trade
cocoon 40, 60, 80 ; 1 cocoon: 1500 coins + 2 KP per trade
nightshade : 100, 150, 200 ; 1 nightshade : 4 crystal + 1 KP per trade
fireflies : 150, 300, 450 ; 1 firefly : 50 supplies + 1 KP per trade
sheep : 25, 50, 75 ; 1 sheep : 12 scrolls + 2 KP per trade
Orc's:
wholesaler only - you could only take up to 10 offers per day
Hardshrooms : 75, 100, 125 ; 1 hardshroom : 12 gems + 1 KP per trade
Psychoshrooms : 50, 75, 100 ; 1 Psychoshroom : 6 magic dust + 2 KP per trade
Powershrooms : 15, 30, 45 ; 1 Powershrooms : 6 elixir + 2 KP per trade
Armament : 20, 40, 60 ; 1 Armament : 400 coins, 45 supplies + 1 KP per trade + 25 orcs per trade
Orc's dung : 10, 15, 20 ; 1 Orc's dung : 750 coins, 75 supplies + 2 KP per trade + 25 orcs per trade
Debris : 5, 10, 15 ; 1 Debris : 25 Psychoshroom + 2 KP per trade + 25 orcs per trade
This means it would be best to take larger offers
Woodelves:
No wholesaler, only possible to trade between FS members + Neighbors [& Friends].
1:1 to maximum 1:2 ratio.
I'm sure producing of Refined T1 goods won't end with WE chapter so I propose we unlock "boost" after we unlock all three refined sites.
But this boost would only go up to 300% and would be based on one of non-boosted relics.
5 relics = exactly 10%!