Would be a lot easier to just close the gap on which nations you can attack. Make it so it is about 10% down and 50% up.
That should make a change in how many raids are going to happen as it would not make raids even worth doing. (though personally I have never thought they were worth the time or the effort for the little bit you gain from them)
Do agree with what Chess Tyrant said about making the prizes here in TE "special" wonders (or something along those lines) in SE. There are quite a few things that could be the prizes for the top 10 nations. Just make them prizes that are not overpowered but still nice enough that they would make SE members want to try and win them.
Level 10 aircraft.
+ 5% could be added to other wonders such as the Pentagon,CIA or SDI just to name a few.
Could fire off a couple more cruise missiles a day or better yet one extra ground attack a day. (that would be a pretty sweet prize to win)
Changing how you win the prizes to something like 5 for the highest NS nation and 5 for those with the most casualties.(and again something along those lines)
You know how they are there in SE admin and you can sure as hell bet about any amount of money that once a couple people from SE get those wonders or other "perks" then everybody in SE is going to "have" to have some.
People from SE would be the easiest to get to start playing TE as they must like the game since they are already playing a game pretty much the same as TE.
Not really worried to much about TE becoming just like SE as all of us here playing round after round could crush just about any size alliance put together from new SE players. Not trying to sound cocky about that or anything but rather just plain confident as we have one large advantage on our side and that is knowledge.
I really don't want to see TE shut down admin and will help in any way I can to help make the game more profitable for you.
Will even start doing some major recruitment over in SE to get new people to play if that will help.
Would say I could help you change the code here for new changes. (that is if I just knew how)