Ieuan Jones looks very promising, probably good for his development to go to the Blues instead of being behind Faletau at the Dragons. I think he'll fit in well, and partly solves another of the Blues' problem positions.
If the Blues can retain Warburton and Halfpenny, and keep a relatively injury free squad (especially regarding Warburton, Patchell, Allen and Owen Williams), then they should be much more competitive next season imo. I've been critical of Phil Davies, but he looks to be settling in now, and beginning to turn things round. He's made some good signings and has brought Macintosh into the backroom staff. It's quite a young squad in areas (first choice midfield in particular), so it may take a little more time, but I'm more optimistic for next season than I was last year.