well godspeed was not portrayed like the comics, his suit was nothing special, actually looked the worst out of zoom, RF, the rival, savitar.....godspeed suit looked like spandex, whereas the others looked more leather, more padded, basically looks better.
also godspeed didn't display really any sign of being the god of speed, also wasn't that savitar's line?? nora was able to run away from godspeed and keep the gap, she was just getting tired and didn't know what to do, plus she just got her speed and RF was mentoring on what to do, eventually godspeed caught up to her that's only because she stopped running and needed advice from RF on what to do, she panicked, getting speed was all new to her.
basically if godspeed couldn't catch up to her and take her out easily then he would've been slower than zoom, savitar, and most likely RF....all those speedsters are fast enough to close the gap against nora especially if she just got her speed, she's not going to be just as fast or faster....rankings for villains in terms of who's faster goes, 1) savitar, 2) zoom 3) RF 4) the rival however zoom and RF could be a a close or tie,,,,godspeed seemed like he was on par with the rival, not any of the others in terms of speed....plus using velocity drugs is like taking a speedsters steroid, pushing his levels further than normal so in my honest opinion using a drug to get speed doesn't classify you as a speedster unless for some reason or another you manage to make it permanent...drugs like velocity 9, ect only give you temporary speed so really I wouldn't classify them as a legit speedster.
they could always bring godspeed back making him more powerful by him succeeding in making his speed permanent the way he was trying in nora's timeline, but they should wrap up with cicada/grace first and really don't need to bring in godspeed as a speedster...my guess RF has something planned, was it a coincidence that when barry left there was like 10 min left....RF is always planning and steps ahead, so who knows what he has planned....obviously he wasn't going to waste his time in prison to send nora back for no reason, my guess pushing barry over the edge again to come see him could've altered RF future therefore saving him from the countdown...who knows.