Although, not many people liked it but here is my take on it.
The good:
Excellent voice acting
Pretty neat anime style animation
Good character designs
Good humour that can actually make me laugh
Got introduced to characters that i am not familiar with from the G.I Joe series.
Good 22 minute format for a series.
The bad:
Cheesy dialogues
Not a very good concept with the Sigma 6
Annoying music except for the end credits
Poor censorship
Overall it wasn't bad nor it was great it may have not been as good as the 1985's series that everyone loves, GI Joe Resolute or even GI Joe Renegades. But it was okay, plus I only watched cause I wanted to have another GI Joe cartoon to watch.
Plus it is not the worst attempt I have seen at a reboot i.e Teen Titans Go! but it is not the best though.