I don't understand the need to fix Spa Day, a pack I quite like (if that is indeed the pack they are talking about). I never have had any real problems with it. The Wellness skill is awesome, and I give it to a number of my sims (depending on the personalities) because it comes with very powerful buffs. The massage tables and saunas work great, and even the yoga class, whether it is at a Spa lot or in a gym, has never glitched out on me (unless one of the mats was blocked).
Dine Out is the Gamepack that needs the most improvements and fixes. I still have never gotten over the fact that your sim can't be a Chef in their own restaurant, and that they can't share their high level cooking skills with or train other chefs. What a missed opportunity. I also agree that Outdoor Retreat could be improved in several key ways: I would love if the water in Granite Falls was swimmable, if there was a group hiking interaction that could happen there, and if the insects spawned not just in that vacation world but throughout all worlds.