Why would they add as you say " The best things from abberation " to a free map? They need to sell DLC to fund their next garbage game, "cough" Atlas "cough " Sorry flu Season in Australia.
Only reason Ragnarok got Wyverns as the game was pretty dead at that point, No one like SE there was no extra DLC coming out any time soon and someone else had done ( granted it was like 30% completed ) all the hard work for them.
Now i love Abb, Favourite Map. It's Gorgeous, has the best dino in the game for PvP from what i understand ( Reapers ) but if you remove Rock drakes and Reapers and in turn Basilisks due to no eggs the map is useless and a complete waste of time.