I really try not to judge something based on day one information, but my instincts have not been wrong (with the exception of Machinima's CW series), at least for my personal preferences.
My personal History since being online are as such-, again these are just my own opinions, which proves that for me personally, my own feelings about whether I ultimately like something or not, are usually based on first impressions
Beast Wars-Thought the toys looked goofy at first, no predisposed opinion of the show, gave it a chance, ended up liking it.
BWII- Liked the toys, liked the show
BW Neo- thought the toys were a notch down from BWII, liked the show much less than BWII
Beast Machines -Had a bad feeling, turned out to be right, hated it
Car Robots/RiD - Loved the Idea, Really liked the show (though I admit I liked the Japanese CR better)
Armada-Didn't look good initially-I ended up not liking it
Energon- Looked slightly better than Armada, was proven right to myself, liked it slightly better than Armada
Cybertron- Disjointed continuity along with CN god awful out-of-sequence episode order, and erratic timeslots, made me not even care
TFA-hated it from the first press release, was right for the most part, S3 stories won me over a bit, but I never warmed up to the awful look of the show
Prime- Loved it from the first press release, It is now my 2nd favorite Transformers series of all time.
RiD15- was apprehensive at first. Turned out to be ok, but definitely several steps down from TFP
CW-Machinima -basically this is a case of false advertising. I thought we were going to get a fully animated series called Combiner Wars, not a poorly animated, hack production, that had little to do with Combiners, or characters at all in general.
Now, my first impressions of Cyberverse based on what it *claims* to be are very positive. There has never been a true retelling of the original series, and this could be quite well done. The switch to a lesser known production studio (Boulder Media) makes me a bit hesitant after the whole Machinima fiasco. If future seasons (chapters) have the opportunity to explore Beast Wars and the like, I'm all for it.
I was thrilled to hear Hasbro finally is going to be producing Transformers animated films again. Bummed they are based on the Movieverse though

.