It makes it a little less busy but still draws attention to itself when the card is first played
For example, Katara, Water Tribes Hope allows you to pay X mana to give all your creatures base power and toughness X/X until the end of the turn, but you can tap artifacts or creatures to help pay some of that cost, similar to the Convoke mechanic
You will be unable to use this card in any official TCG tournaments, and I doubt the average joe would be interested in it
Mechanics which affect the cost of other spells are also very popular, and often among the more powerful effects in the game
8 Plusle and Minun The third generation of Pokmon was the first that would try their hand at making another adorable little electric rodent similar to the iconic Pikachu, thus began a long line of "Pikaclones", the first being a duo of Plusle and Minun