I really genuinely like Justin Harmon. Seemed like a great teammate and I always thought he played hard. However, he really didn't produce outside of a solid run in January when TJ got suspended(which was nice) but he was basically invisible in March.
Feliz would be the bench guard I would love to have on the current roster.
To play devils advocate a bit though, Justin Harmon was still a 5th year player that averaged 14 on a very good Utah Valley team and he was awesome in the NIT(there is a lot of talent in the NIT despite all the jokes). He dropped 32 on New Mexico in that tourney that had Jamal Mashburn Jr, Jalean House, and Donovan Dent.
However, there is a huge difference between being an 18 year old freshman and a 23 year old senior(which is why you used to see a lot more mid major upsets when the small schools in March were full of 21-22 years old playing against power conference schools full of freshman and sophomores).
Morillo is a top 50ish recruit and so was Ty who didn't do much as a freshman. So I wouldn't necessarily even expect Morillo to give the production Harmon did.
Maybe he will, but top 50 guys aren't always ready to produce as freshman(some top 10 guys aren't).