The addition of triple cast and foul do add a bit of vairence to your rotation and involve a bit more juggling be done. You don't really notice how much until you've ran 70s a lot and suddenly do levelling and get dropped into bardems or castrum for example and don't have those skills.
You're like ... oh I know what I can do here... nope synced out lol
I would say if you've not enjoyed it up to now getting those last 3 skills probably won't change it for you though. Might add a little more salt and pepper to the steak but considering you like it rare and this is well done no amount of salt and pepper (seal) is going to make you like that steak.