If SF6 had better projectiles (keep anti-projectile good too though, maybe improve that some too), less advantage on light attacks, and more blockstun, I think that would solve a good number of things
Older SF games and CvS had blickstun=hitstun, tick-throw prevention frames, footsies/non-stubby medium/heavy attacks, faster walk speeds, invulnerable DPs, and/or more pushback. Capcom knows how to make an SF I'd enjoy, but SFV just fundamentally went the wrong way across the board (for me).