Imagine having only 5 seconds to choose who you'd be with for the rest of your life, or you'd end up alone forever. Only two people in this room you have to choose between. They both have their flaws and their strengths, bringing them to equal quality in your eyes.
Wouldn't that suck? Especially when you think both candidates would bring you down in the end?
Now imagine, instead of being with this person, you were forced to combine bodies with this person, and there was no way to end this...
Well, in this story, that's what happened to Goku. He was a little quicker on the progression of his thought process, easier to conclude that Hercule was the best candidate to fuse with!
But, in a way, this is two What-Ifs in One. In a way, I've also created a fusion! Not only is this "What-If Goku Actually Fused with Hercule", but also "What-If the Potara were actually Permanent".
The Potara still do the multiplier of "tens of times" (I'll say times one hundred for argument sake) but never gained a mortal time limit.
How much would this Fused Martial Artist's life be affected by his new life choices, let's find out shall we?