@Coolsteph I'm attempting to follow Hydro's original intent with genera, which he informed me of some time before Alpha returned. Not only are Beta-like genera much closer to what he actually wanted to see out of genera, they're also objectively a lot better than having a single genus that's just "the insects". He's even considering bringing genus regions and other Beta genus features to Sagan 4 in week 27. There was also a vote on the discord server to make Alpha's genus rules more like Beta's, and while no announcement has been made the vote was unanimous.
Also, plenty of genera have spawned without spreading everywhere first. It's just that the bulk of genera were made to group existing stuff that should have already been genera anyway together. I do agree that we really need genus regions, though the 3 I submitted today have justification for actually being global: two of them can fly, and this one can swim.
And finally, while large fauna certainly
are diverse...small fauna aren't. Everything below a certain size is in just a few genera that pale in comparison to the diversity of everything else when they should be the
most diverse out of everything.