There does not seem a lot to shout about, I am not sure if the Action might mean that market gets a bit overcrowded as it seems to be relatively small and too many models might mean there is not enough sales to go round..
The Altea might benefit from more electric outlets on some models rather than different upholstery and personally I prefer the Truma system rather than Alde except for the largest caravans and the range looked a bit heavy before and this might just be too much.