Hi @nivaun and welcome!
I’m 100% with you on your requests, however it will be more useful if you vote for an already-existing feature request topic, as that way everything is consolidated in one place, which delivers greater impact when & if DxO comb through to see which features are most desired.
Here’s the most-voted one describing sub-folder drilldown: Add option to show contents of parent folder and subfolders when searching by folder name
And here’s the most-voted one for keyboard shortcuts: User assigned keyboard shortcuts