A primary issue facing Avogadro 2 is the ease of access for new users. Things like the now-fixed python bug that stopped Avo2 from alerting users when they didn’t have python installed or the issues with force-fields defaulting to the LJ potential with ions and radicals (causing significant molecular spaghetti) generally present a significant barrier for users who want a “plug-and-play” experience. I myself encountered many of these issues when I first started using Avo2 almost 2 years ago, but I was persistent since many alternatives, in the words of another computational chemist, "feel like 2006 Java slop.”
Recently, with how well Avogadro 2 has been progressing in terms of overall stability, features, and general ease of use, I’ve been suggesting it to anyone who is looking for visualization software (and anyone who even so much as expresses mild interest in looking at molecules). I’ve also polled some small parts of the computational chemistry community to see why it isn’t the default program for most use, as it seems to me like it is better than 99% of software out there for visualization.
From my questioning, it turns out that the issue isn’t bugs or crashes, it’s that when you google “Avogadro 2” the first link is https://www.openchemistry.org/projects/avogadro2/, which directs visitors to a download page that has Avogadro 1.91.0 as the latest version. That version is 7 years out of date!
On the off chance that a user types in “Avogadro 2 download” the first link is https://two.avogadro.cc/, but the immediate number 2 is the OpenChemistry website and just a few entries down is a link to the SourceForge page that only gives up to Avogadro 1.90.0!
So, in an effort to not raise an issue without also proposing a solution, I have a simple fix (simple to say, not necessarily simple to implement).
First, someone needs to get in touch with the owner/maintainer of the OpenChemistry website (I think it’s Marcus Hanwell) and either get them to update the website or just take it down entirely. I lean more towards taking down the website since it doesn’t seem to be actively maintained by anyone, and the Avogadro 2 website does just fine for hosting the download and user guide. Second, the SourceForge site has to either get updated or get removed, which I think is easier to deal with than the OpenChemistry website since @ghutchis is listed as having access.
I also think there should be more emphasis for users to download the nightly builds on the website instead of the releases, at least for now while 2.0 is still in the works. The nightlies might introduce some bugs, but by and large they fix more bugs than they introduce.
Anyways, that’s what I’ve learned. The primary issues aren’t necessarily bugs and crashes, but just getting the right version in the first place.