The boosts were indeed added with the banner as you describe it. None of the players asked for the slowest dinos to become the fastest, and when tanks began overtaking the speedsters it was inevitable where the game would end up. So I concede that one to you, and even now in their fourth guise they are still as evil as ever. The worst part is the eagerness of the players to buy them up whenever they’re available.
The droppers could also be blamed on Ludia I guess, because it’s possible to do this, and in the upper arenas players have to wait so long for a match up. So I concede this too.