Indeed but the cost of people using an ATR to do business over a B737 is an order of magnitude. EI point to point in this market is pricey, the ideal FR which worked very well was morning noon and evening daily at the same time on the right sized aircraft. Quite why FR didn't take B737-700s as well was a shame, however they're not a sophisticated organisation behind the scenes alas. The much larger series 800 has proved too big for a lot of routes that worked remarkably well on the 200, and for more than a few bases.
Only 1-2 waves of GLA-DUB are any use for connecting, the rest needs p2p, a market FR allowed EI back into.