Re 'amazing things', well you can start with 6D in a skill and after accumulating a couple HP/FP you can add +18 to a roll, where an amazing thing has a TN around 30 or so. So you can certainly play Luke blowing up the Death Star a few sessions in to the campaign.
As I said, per the rules a new character starts out with 1 (possibly 2) Force Points. That allows the brand new character with 6D in a skill to spend 1 FP and roll double the dice. That's an additional +6D (average value 21 points). This is better than spending three Hero Points in Mini Six.
If the skill is lower, say 4D then 1 FP gives +4D (average value 14 points). This is better than spending 2 Hero Points in Mini Six.
Unless characters in Mini Six start out with 3 or more Hero Points they can't even get to that +18 until after they played for a while. So they can't do amazing things from the get go.
Thus 3 Hero Points is about equal to 1 Force Point. So the players will need to a lot more Hero Points than they would Force Points to be of a similar power level. That's an observation, it's not necessarily a criticism.
Don't forget that in D6 spending a cp doesn't buy you a die but a WILD die, which is just as likely to ruin your day as it is to make it
No it can’t ruin your day.
Spending a character point always results in a higher total. On a six you add the 6 and roll the die again. On a 1 you just add the 1. Getting a 1 on dice from character points does not subtract a die and it does not result in a complication. This is explained in the section on Character Points on page 83 of the 2R&E rule book.
EDIT: Scooped by Chris on dice from character points.