I do hope Flybe can find a way to keep their E195's operating, presumably renegotiated lease terms could help this to happen although we of course do not know the full details. With the economy improving and passenger numbers growing having a few larger aircraft to increase capacity on the peak routes and allow for some longer routes to be flown (i.e. UK-Spain is one of the busiest country pairings in the world for air traffic, and there are still quite a few niches that could be explored via W patterns or flights to smaller Spanish airports).
Wiki states (I know I know...) that Flybe currently have 10 in the fleet, and I would think that 8-10 aircraft would probably be all Flybe would need to cover the areas I have mentioned above. They of course also have a decent amount of commonality with the E175 fleet which helps reduce the additional costs of having a small number of a different aircraft type in the fleet.