All respect to the 🐐 Toriyama but he clearly did not like Vegeta very much and Vegeta likely remained a prominent part of the series because of how popular he was with people and how much Vegeta merch gets sold.

Vegeta fans have been asking for him to get a clean big W or an arc ending victory on someone for years now. It still hasn't come. I hope he's the one to finally end Frieza once and for all on his own. It's a W he deserves and one he should have gotten in the Ressurection of F film.