Season one and two was basically the same as Voyager. 24 or 25 stand alone episodes. More continuity than Voyager but more than zero isn't so much of an improvement.
Season 3 was one big massive arc. Badly executed, but a B minus for effort.
Season 4 was several multipart stories.
Observe
Stand alone...
#403 Home
#410 Daedalus
#411 Observer Effect
#417 Bound
#422 These Are The Voyages
2 Parters...
#401 Storm Front, Part I
#402 Storm Front, Part II
#415 Affliction
#416 Divergence
#418 In A Mirror, Darkly - Part I
#419 In A Mirror, Darkly - Part II
#420 Demons
#421 Terra Prime
Three parters...
#404 Borderland
#405 Cold Station 12
#406 The Augments
#407 The Forge
#408 Awakening
#409 Kir'Shara
#412 Babel One
#413 United 02/04/05
#414 The Aenar
Arguable 5 parter...
#404 Borderland
#405 Cold Station 12
#406 The Augments
+
#415 Affliction
#416 Divergence
In season one Enterprise had 1 and half mulitpart stories. The pilot and the cliff hanger at the end. Although their several detours to get their end away on Risa were somewhat hilarious. Season two had 1/2 a multipart story. Shockwave II.
Enterprise completely shifted their paradigm between season 2 and 3, and then again between season 3 and 4. I mean if the full season arc was such a success, then surely they'd try that again and hopefully learn from their mistakes last year and actually tell a cohesive 24 part story for their fourth season.