I wanted to say Riyria Revelations and Chronicles, but you already got it on the 'done' list. Then I thought about Raymond E. Feist... but, ehm... the quality of his books vary and the over-all quality isn't that impressive. The first 6 books are nice, some of the stand alones are nice too, then you have The Serpentwar Saga which at least features 4 slightly different themed books, which is quite an accomplishment for this particular writer. And the Conclave of Shadows trilogy is nice too. However, most likely you won't be that impressed by this particular recommendation.
If you are ok with trilogies - you could try The Night Angel trilogy. It's not the best thing out there, but it is entertaining in its own way. I felt the 3rd book was a bit rushed, but hey - better to leave early than staying too long.
And you could always go for The Lord of the Rings trilogy. You will feel like entering into a magical world created over 50 years ago, but in a good way. Which could be refreshing, considering how a lot of books cannot really pull off a noticeable world-building or nature description. It's a little bit slow at times, but in my opinion it's worth the time.
There is also one little known series called Queen`s Thief by Meghan Whalen Turner( not sure I've spelled the name right) which is 4 books long and 5th book is supposedly on the way, but the 4th book doesn't end in with that big of a cliffhanger and I am almost sure the author has either abandoned the series or is working slower than G. R. R. Martin. It's thief-themed series, all 4 of the books are somewhat different from one-another as a tone, even though they follow a linear story progression. It won't rock your world, but it's a solid light read for between heavier series.
And another trilogy - The Magicians by Lev Grossman, which is pretty fresh, and interesting and well-written, and there is even a new TV show about it, but I would recommend you to read to books first, before giving a chance to the show.
I wish I could've been of more help to you, but most of the series I have read recently are half-way or almost finished, so there is only as much as I can say on the matter of fully finished series.
And there is one trilogy I am not sure I want to recommend you. I am not sure about the trilogy name, but the first book is called The Blood Song and the author is Anthony Ryan. The thing is - the first book is great, it's 10/10 great. But the 2nd and 3rd book are having a steady journey southward. I wouldn't say the trilogy is that bad, it's probably 7/10 or 7.5/10 over-all.The biggest problem with it is that it could've been much better, should've been much better, actually. If you are interested you could search around the forum for it, there are some threads about it I think and you will get a better idea what the general opinion is when it comes to those three books.
And I am pretty early in my Terry Pratchett journey, started it recently and I am on my 3rd book of his vast collection of 41 books. I know that most people enjoy it immensely and it's more or less finished, even thought it's more few series happening at the same time in the same city or something. As I've said - I am on my 3rd book, so you should probably ask someone who has more experience with the Diskword. So yeah, that's an option as well, I guess.
