I believe they began calling it the Beachline because it is probably the most direct route to the eastern beaches in central/north Florida. We have used 417 for the past several years and make it from MCO to WDW in probably 20 minutes. Never hit any traffic. I think the tolls are about $2.50 (give or take .50) Well worth it to us not to fight I-4 traffic!! As a matter of fact, if we're going to Universal we don't even use I-4, but, go north on Apopka-Vineland for several miles and then cut across Conroy (I believe). Haven't gone to Universal in about three years, but, I think it is Conroy. It's far easier than fighting traffice on the highway.
Sorry......it's not Conroy, but, W. Sand Lake Road, then turn left on International which runs right into Universal Blvd.