I know it's just fun to guess and suggest. The game needs more traits and aspirations badly. There should have been some added for each EP and GP.
For spa day
A wellness aspiration to go with the wellness skill. The goals would involve meditating, yoga, eating right and so on. The perk would be your sim has the ability to calm down any angry or tense sim with just a word.
The added trait should have been peaceful, sims that enjoy being one with the world around them. They love quiet moments, yoga and meditation and rarely ever fight or be mean to other sims. They get tense if they see a fight.
For GTW
The aspirations added should have had something to do with active career and adding a business.
The added trait should have been business minded. This sim has a keen eye for business and is very successful at work. This sim doesn't enjoy partying for very long periods of time. They get a happy moodlet when working overtime.
For GT they did add some traits and an aspiration, but I wish they would have added a party animal aspiration for the dance lover sim.