Yes...
You've answered your own question: Star Wars: The Old Republic, the BioWare-developed online game set in the Knights of the Old Republic continuity (ergo, Legends1) is still being actively developed, and has received quasi-regular story updates since the (April 2014) canon reorganization, as recently as November 2017. So not only can new Legends stories be told, they are actively being told, at least for now.
Similarly, other licensed products have mined Legends for material; we have another question on the site about one of Fantasy Flight's war games, and at least one of the licensed mobile games has incorporated popular Legends characters.
...but don't expect them to
In principle, Disney/Lucasfilm can do whatever they want with the Star Wars canon; if they wanted to continue Legends storytelling, there's nothing preventing them2. Whether or not they will is a different matter, and seems unlikely; the New Republic Historical Office (an EU-advocacy fan group) report on a a letter from Lucasfilm, received in response to a letter-writing campaign asking for a return to Legends continuity, which emphasizes Lucasfilm's commitment to the new storytelling:
Since Lucasfilm joined Disney, Star Wars storytelling has been delighting fans, expanding the Star Wars mythology across diverse mediums in new and exciting ways. During this unprecedented era of expansion, our focus is on creating and building upon the new Star Wars stories.
Lucasfilm is certainly not averse to releasing non-Canon content, but there are no immediate plans (none that have been made public, anyway) to continue Legends storytelling outside of The Old Republic. Even SWTOR is an anomaly, and appears to only be ongoing thanks to the multi-year licensing deal between Disney and EA (BioWare's parent company). Difficult to see, the future is, but there's a very real chance that all Legends development will end once that deal expires.
1 That SWTOR is a continuation of Legends storytelling was confirmed by Lucasfilm Story Group executive Pablo Hidalgo on Twitter. Unfortunately I seem to be unable to search his tweets, or link to them directly, but some pop culture reporters discuss the Tweet on their Facebook page. In case the links ever start working again, the original tweet can be found here.
2 There may be some legal implications involved with continuing stories that were created by third-parties under licenses. Or there may not be; I'm not a lawyer. Even if those problems exist, however, they're not insurmountable; with enough time, money, and lawyers (and Disney certainly doesn't lack for at least two of those), anything is possible