@mayorlight  
hell yeah, I’d have loved another Buffalo episode: specifically one with Little Strongheart and Braeburn together as a couple. The one flaw that Hasbro seems to have is the distinct lack of World Building and Lore in-general aside from the surface level stuff offered through in-show flashbacks or flat expository dialogue. This is part of the reason why we have such a strong stigma against Alicorns: because they are never even talked about in detail, how they fit in to the mythos of The Three Tribes, their culture and history compared to that of the Three Tribes and how they interacted with one-another, etc.
 
We could have had Alicorns be the result of a Pony reaching inner-clarity through patience and meditation that results in an awakening akin to zen philosophy. Or have Alicorns be split into two categories of Mortal and Immortals like was said in Past Sins. Or have there be a civil war between the Three Tribes after the Hearthswarming and tie the Alicorns and the Crystal Empire into the lore of how Equestria as we know it was founded.  
GO ALL OUT! TELL AND SHOW!

Not showing up on TV often enough, possibly because their presence brings up an awkward past those at the top would rather forget. Yet another trait they share with indigenous peoples.

Hey!  
Remember the Diamond Dogs?

@Background Pony #E528  
What makes you say that?

Well since 2010 or 2011 actually I wonder what happen to them I feel like we never heard of them again

@rainbowsmash  
Comics aren’t canon.

They thought about coming back to the show for another episode, but they had reservations…

False. They appeared in issues 61 and 62 of the MLP comic. (december 2017)

@Background Human  
The La Li Lu Le Lo? Yeah, makes sense.

I find it odd that Twilight didn’t reach out to the buffalo to send a student to her school.
 
Personally, I’ve always hoped for another episode featuring the buffalo (aside from comic story where Rainbow Dash visits them again). Sure, they were a rather clumsy analogy for Indigenous folk, but I’m glad Hasbro took the gamble.

They were destroyed by the Patriots.

The whole buffalo thing was awkward as hell at best.

They were…moved…moved onto…reservations…and maybe given a few blankets. They may have had a little illness keeping them in their teepees. Probably why you haven’t seen them.