Episode 4 unfortunately made no improvements. I really want to like this show but they make it very very hard.
Apart from the already mentioned missing "spark" the show is also too disconnected from it's predecessor. No Library, no mentioning of the established Lore, no other Librarians or Guardians so far.
At least in the original show they had a reason for why the Library was gone...here they just have no lore-wise explanation why they can't show it.
From a quote on IMDB it is pretty clear that we won't get any more cameo's or guest appearances from the original crew anymore:
CW entertainment president Brad Schwartz told TVLine that they were "100%" trying to get at least one original Librarians cast member to at least put in a cameo and pass the proverbial baton -- and they ended up securing Christian Kane, who will reprise his role as Jacob Stone in a guest-starring capacity.
I can only imagine that the OGs must have gotten one or two scripts and decided "No, Thank You!"
Talking about connections...
...there is Elaine, which at no point so far has mentioned any of the other Immortals (Judson, Charlene & Jenkins) which she should have at least known. Especially since she doesn't use a different name and is probably the Elaine of Astolat.
Even if they don't get anyone of the original crew on the show, they could've at least established the character who became Stone's guardian instead of Charlie and bring him/her on as a liason to the Library. That would've given the viewers something to look forward to (news from the current day Librarians and what they are up to).
I think four Episodes in we should've seen at least a little bit of that or something similar.
Shows that deserved more runtime:
Abbys | Dead Like Me | Devs | Firefly | Gangsta. | Jack of all Trades | Kevin (probably) saves the World | Lodge 49 | Mrs. Davis | NYC 22 | Powerless | Roadkill | Special Unit 2 | Star Wars: Tales of the Jedi | Stumptown | Surface | The Brave | The Company You Keep | The Crazy Ones | The Finder | The Middleman | Truth Seekers | Two Weeks to Live | Whiskey Cavalier