I've now watched Seasons 4 & 5 of RWBY, which finally catches me up to the current season. Overall, these were great seasons, though they lacked a bit of the emotional kick of season 3.
In fact, Season 4 dials things down quite a bit as following the devastation at the end of season 3 the characters are left wandering the countryside on their own personal journeys. It's quite a different tone for the show as things slow down and the writing focuses on personal growth & recovering from loss, some mourning the loss of friends; others their loss of identity; and one in particular dealing with losing their arm at the end of the previous season.
This is definitely where the show expands its scope and you get a great deal more of a sense of the world of remnant, and certain characters gain depth they really didn't have before. Also, if you haven't been watching those "World of Remnant" history/world videos, now's a good time to do so because there's a LOT of lore in this world that the main show doesn't really address but which nicely complements and foreshadows events in the actual show.
Season 5 is more of the same, but with the characters finally reaching the show's 2nd major location in Haven Academy there's a lot of sitting around while the elder characters finally revealing the Truth of the prior seasons to the younger ones. This is the 1st season where the episodes have a fixed longer length, around 15-20 minute episodes (leading to a 4 hour season), which means there's a great deal more time for that sort of thing and little character moments. Unfortunately, Season 4 introduced a new character that's not actually a new character, and I hate that they went that route. It really cheapened a major event from Season 3 for me.
That said, the season ends on a strong note with the scattered parties finally reuniting and scoring their 1st actual win against the villains since the 2nd season. I'm looking forward to seeing where this story goes once all of Season 6 is out. RWBY's been a welcome surprise these past few weeks, as I've watched an OK show improve to a good show, and finally a great one over the course of the 5 volumes. It's a rough going at first, but I recommend it. I see shades of Avatar: TLA and Harry Potter in its world-building and dedication to improvement and maturation.