But do the people in the 24th century consider it to be a "starship?" In Bread and Circuses, Captain Merik said that his survey vessel (the Beagle) wasn't a starship but a spceship. It was a small class four stardrive vessel, with a crew of forty seven, yet only a spaceship.No. It's constantly referred to as a Starship throughout the entire series.
But is different in some important ways too, the timeline that comes from details in the first four series are radically different in ENT's timeline.ENT acts as a direct prequel to a lot of TOS stuff.
Not really, the characters of Riker and Troi look noticeably different than they did in TNG, Troi's clothing is a different color."These Are the Voyages..." (ENT) shows that ENT and TNG (and thus TOS, TAS, DS9, and VOY) take place in the same timeline.
And with a major crisis in progress, the Riker from "our" TNG would not be spending LARGE AMOUNTS of time playing on the holodeck, it wouldn't be in line with his previously displayed behavior.