That would have helped them. But remember it wasn't just outside shooting that hurt that team (they were a poor 3 point shooting team). It was a lack of size at center that got them beat against teams like the nuggets.
Back then the league let more physicality happen in the paint and actually let big men dominate and play physical. In that nuggets series they tried to go small to beat the nuggets but Mutumbo (he was a true 7 footer and they could not handle his size or Lephonso Ellis) just controlled the paint and dominated kemp and the rest of seattles big men.
The sonics ended up addressing the size issue getting Jim Mcilvane and the shooting issue by getting Hersey Hawkins and replacing Kendal Gill at SG.
They couldn't get Mutumbo out of the paint, today, it would be a gang of PnRs and possibly stretch 4s playing at the 5 to get him to cover the PnR. That's one of the reasons Yao and the Rockets could never get it done, teams just constantly got him involved in PnR coverage and forced him to defend further out than he wanted to.
That same Sonics team today would be a lot like the Clippers, who are honestly a throwback team in how they have two interior bigs, but nobody really believes they can win it all because of spacing issues.
I think the zone is really more to blame for how the game is played today more than anything else.











