I'd say no, no & no for a typical range or sport at. For HD or SD, you might be giving up something.
If you plan to shoot rapid fire for multiple 30 rnd strings, the first 2 would be nice. Dust cover is just that. No need, unless you drop in the dirt!
I would like to see a properly marketed sport AR. Trouble is, they get marketed now as a $600 AR. Seems like giving that up and marketing it more like a better Ruger Mini 14 would be best.