To me, the trailer looked like a bunch of self-aware ironic humor, "REBOOTS BAD AND WE'RE REBOOTS TOO LOL XD". I'm pretty sure the show will pull a Simpsons and start bashing modern internet culture at some point, I just dunno when.
I'm about 2/3 through the season (a second season is in the works), and it exceeded my expectations.
Definitely a spiritual successor to the original and more like a modern times continuation than a reboot. Great animation and voice acting and songs are great. Plenty of laugh out loud moments but I guess the episodes don't have much story to them like the original.
It's all Warners and Pinky & the Brain and while I don't think they needed to bring everyone back, I'd like to see Skippy and Slappy and Rita and Runt. There are some new characters, but it looks like most are one-offs even though the episode is set up for them to be recurring.
Overall, I like it and looking forward to season 2 and the Tiny Toons reboot.
(I also hear Darkwing Duck is getting it's own reboot, but not with the Ducktales 2017 crew).