Provided bottle caps aren't too hard to get you shouldn't need to soft reset for anything but the proper nature.I'm excited to see how the competitive meta plays out. They have to come up with some new rules or something. Otherwise these poor poor pokemon are going to get left in the dust and we are going to have a gen 6 meta all over again. Maybe once the main site is updated with the new info and we can see all the info for each pokemon with the respective pokemon it will be easier to form strategies, but right now I don't see myself using any one of the new mons for battling. Which sucks because I was really looking forward to new strategies, battles, and teams.
Either way, it is going to be rough finding decent trade bait to get competitive legendaries with there being so many. I hate soft resetting for event pokemon so I know I won't even try on story line pokemon.
And plenty of slow pokemon are used in competitive. We'll just have to see how things go.
I am a bit surprised by Kommo-o though. The best physical Fighting move it gets seems to be Sky Uppercut. Which is okay and all, and it has the stats and moves to be a good Special Attacker as well (though then it has to rely on Focus Blast for Fighting STAB), but its still surprising.