I sunk many hours of my life into this beautiful, beautiful game (starting at the tail end of 1.5, however!) and sometimes tune in to watch CS:GO competitive matches. I know Valorant is apparently stepping up as a spiritual successor to Counter-Strike, but I just love this game for it's emphasis on pure skill, and I really am surprised few other games have come as close as 1.6 to perfecting a team-based FPS that land…
The main thing shared between the two is the feel while shooting. It's hard to explain, but you feel the "weight" of the gun and it's rate of fire really well and it's satisfying when you land shots.
But, the abilities, while not overly broken, does change the feel and strategy considerably. And Valorant maps are really bad in comparison to CSGO. So much useless space, bad angles, etc.
So, while I hope Valorant pushes CS to get better, it's unlikely that the pool of players or viewers will be 1:1. The CS pros moving to Valorant are basically doing so because they either can't have a CS career (Brax, perma ban for match fixing; iBuyPower) or haven't been good enough in a while/never were good enough for a T1 CSGO team.