How much "help" we find in the next portal window is debatable. And the importance of Spring practice for the OL is building that unity and cohesion. Not to mention the off-season S&C which, for our OL, gets them ready to play at the fast pace with which we operate. That's not to say we couldn't get lucky in the Spring window, but any additions would have missed valuable time.
I'm of the opinion the quality of player we see in the Spring will be less. Mostly guys who failed to win a starting job in Spring practice. I could be wrong, but I might be right. Time will tell.