Recommendations I can think of:
As far as Odin goes, i can't say for certain where the cheaters priority is, but i can say that you can adventure to other areas especially the higher level character you have. Using Records of Eminence access Escha-Zi'tah + Escha-Ru'aun + Reisenjima.
Use this link to adventure to areas that are not associated with SoA expansion but are viable for pre-99 exp and some nice "EX" tagged treasures:
https://www.bg-wiki.com/bg/Grounds_of_Valor
If you're not commited to a social community on Odin, you can transfer to a lower population server or a server less over-run. I believe Odin is like one of two of the major asian servers. One way you can accomplish this is to use the character expansion to create level one characters on different servers to scout them out. Once the mule is placed on a new server, communicate with those that are there and learn weather or not the environment is acceptable.
At level 90+ if you can coordinate with a handful of other players there's a WotG content activity that rewards respectable exp:
https://www.bg-wiki.com/bg/Category:...s_Battlefields
If that doesn't produce results, attempt the areas of Dynamis. The Chains of Promanthia "Dreamworld" Dynamis areas generally wouldn't be over-run:
https://www.bg-wiki.com/bg/Categoryynamis