Ponder this -you have to see the extremes in anything -even if you never use them.
1. A plane can be done at ZERO weight -
Rubber inflated aircraft -man carrying were once considered as a possible emergency vehicle.
Theoritically one could do a powered airplane which was simply ZERO weight - not lighter than air - just at ZERO weight -
2. too heavy is too heavy - you can add bigger wings etc - but then you have changed it--from being too heavy to simply heavy.
3.enough power nothin else matters - no matter how badly you bungle the size/shape/ cg/whatever , enough acceleration will keep it moving.
4. not enough power ? Then if it will not move -of what value are of the other parameters?
Honest- I do know what makes a plane fly - and fly well or badly.
I also like to look at what may seem to be absurdities- Some "absurdities" are the real answer to a question about what is wrong with a particular airplane.