When we look at what PokeMMO offers as we speak, we can count ourselves lucky for all the features that are currently already implemented and readily available to us.
In regards to what future updates the client holds in store, is up to the higher ups. Time will tell.
Also, certain features might actually be integrated to create a challenge. Which in essence, is the point of Seasonal Events.
(In addition to bonding through links and additional exclusive drops/items/rewards)
Cheers.~