AlanZ The GOS team refuse to improve the default launcher, so we really don't have good options.
The GOS launcher, untill now, it's the only launcher I found that manages correctly main profile, work profile and private space without any issues.
One could argue it might lack some personalization options, like importing icons or the like, but I would say these features are somewhat unnecessary (as in superfluous).
TBH, I think Stock GOS launcher is the best you could have right now, in terms of performance/features.