Nah, the reverse flash was the overall big baddy of season 1, but flash spent most of his time dealing with the rogues, metahumans, getting faster, and one instant with grodd. With that said, reverse flashes are a pretty normal staple in flash arcs, coupled with the rogues and fucking up/trying to fix the timeline.
Reverse flash doesnt really introduce anything ground breaking thats too much to consume, and when done the way it was in season 1, lays the foundation to spend a few episodes of back story on eobard thawnes motivation for hating barry, technology, and wanting to kill him.
Black flash pretty much only comes around when a speedster is going to die. Thats not the case here, and judging from the fact that his name is zoom, and with the introduction of jay garrick, there appears to be clear influence of the new zoom by The rival, who wore a dark costume, its likely not black flash.
Maybe someone will see black flash by the end of this season, then it wont be talked about for a couple more seasons, but black flash as a plot line in season 2 would be a bit much. Especially when theyre introducing wally and garrick this season, along with zoom, and a possibility of the rogues being fully formed, which means Top will be in there, who is an excellent reoccurring villain for barry.
Also linda park is back for most of the season, so stuff is going to build around her.
So far for season 2 we have
Garrick
Garrick training barry
Wally west
linda park is coming back
multiverse bullshit
rogues
random metahumans
Zoom
Reverse flashes (eobard thawne) back story
Probably a dash of rip hunter
Couple random episodes of grodd, as we watch his development
hawkgirl
New firestorm
arrow crossover episodes
and probably some other shit im missing
There is more than enough here to work with for 2 more seasons easy, before we introduce black flash.