Hello,
This item is getting popular and I have brought it to the attention of the management team so they can review whether it can be plugged in the roadmap.
In the meantime, you can Follow this page, and also monitor the roadmap page here https://www.telerik.com/support/whats-new/blazor-ui/roadmap
I agree with you that having all features you are used to in other suites would be fantastic, but most of them have been around for a decade or more, on technology stacks that have been around for longer. The UI for Blazor suite has been around for a year and its framework was made official last month. So, it's inevitable that there will be some catching up.
Regards,
Marin Bratanov
Progress Telerik