I remember the hype for Volume 4, and IIRC it was why I first subbed to Rooster Teeth. I also remember the divisive opinions on it after it had finished airing, and the subsequent, increasing rabidization of the fanbase (especially shippers with the Rainbow Tumour shit).Eh, I don't think they were talented enough to fix it.
The reality was that RT existed at a very particular time period where indie animation wasn't as rare and was much less competitive. RWBY made sense as a free series made on a tight budget by very talented people. Pretty much the same with Red vs Blue.
But trying to turn Rooster Teeth into a streaming service, making higher budget shows, etc. was always a dumb idea that wasn't going to work.
Then the studio went full on Leftist, pro-Tumour, and it all crumbled; then they sold out.
The writing was pretty much on the wall then.