Indeed the "showtime" combos are difficult, but sometimes they have different applications than just damage. I think one of my favorite tensionless combos right now is launcher 5.s 2.h 236s~s because it gives u many more options to work with than just going for damage. Since it gives knockdown u could go for a charge, continue pressure, follow up without tension in corner, or RC it midscreen for more damage. A lot of people would consider this a "showtime" combo because of the tight link between 2.h and puffball but learning some of these combos could really improve our game.
Anyway i guess the point i'm trying to make is don't overlook all the tough combos just because they take much more practice for maybe even just a little more reward.