To better explain the "high thrust line" on new design, take a look at last CPLR design:

http://www.braeckman.de/Bilder/F3ABilder/oxalys2.jpg

The thrust is not centered anymore on this new plane, but actually as you say the stab is pretty much on the wing line... ok! I always thought why designers didn't put stab on the same line of the wing, since in an aerobatic plane upright or inverted behaviour should be as close as possible...

Thank you for your imputs, the issue is getting more clear. Two more things I would be glad to know better:

1) My theory about "side area splitting" has some sense?

2) Why, in your opinion, we are going from a mid-wing design to a more low-wing (see oxalys above...)?

Thank you guys again!