Bad boards

[Kerridoc]

I feel obliged to post this again:

Stones' colour distribution is NOT random - MASTER Board Conspiracy

I experienced in raids that if I leave out one color of a hero - e.g. green - and add e.g. another yellow hero, the share of yellow stones is way beyond average and the amount of green stones is increasing… So the computer/randomizer seems to take the setup of heroes into account in raids which from my perspective is totally unfair and should not happen. I have a lot of videos to prove that. it is not a gut feeling. I would be interested what the dev team of SGG says about this. @Coppersky …

Why would the devs spend time to add non-randomness to raid boards? What possible gain is there to waste time on it? And why would devs choose to make players lose more and get frustrated?