The Heroic Games Launcher is growing with the 2.5.0 Beta version out now, putting it in competition with the likes of Lutris and Bottles a little more with the new features.
One of the major new additions is the ability to add applications from basically anywhere. Heroic is no longer limited to GOG and Epic Games, as you can just add anything in from Native Linux game installs to Windows games / launchers to then run through Wine. This is great since it's such a popular application on both desktop and Steam Deck and should perhaps even make certain launchers easier.
On top of that there's now support for custom user themes, a Download Manager so you can queue up a ton of games to download and a "more robust online checking system". They also upgraded the version of Legendary they use, which is the magic behind the Epic Games support along with performance improvements and bug fixes.
I'll probably take a proper look in a video likely when 2.5.0 is out stable.