They already have a F2P model with the free trial. Allowing that or a limited access model for those who give up their subscription would be a nice option. Even a low-scale sub.
The game already had tons of micro-transactions (some mounts cost more than 2 months of a subscription). There’s also a ton of nonsense currencies.
Best part of the game is the community and the world.
The issue is that you lose access to that free trial if you sub even for a month.