Honestly I think instead of making these suggestions of new servers and modpacks... I think its best to make suggestions on ways to improve the current KraftZone, with plugins and ideas and what not, because If we just think about making more & more servers... soon we're gonna have like 20 servers running...
That is a bit of an overestimate, don't you think?
What is stopping Tekkit from promoting the main server and gaining more popularity through listings and cross server chat?
What is stopping Tekkit from bringing players from online sources (listings) to Tekkit as well as the main server?
What is stopping Tekkit from adding more to the players needs and wants, through KraftZone?
Why do you think Tekkit would affect KraftZone negatively? Do the cons out weight the pros?
If you believe it is best to suggest suggestions that benefit or improve KraftZone (as this does in its own way) then you should make those suggestions!
There is far more to this suggestion that a 'simple' server; it's an addition, an add-on, a plugin, if you will. This is an IDEA; a suggestion. Sure, you could try appealing to regular Minecraft players (when there are thousands of servers), or you could try another way to out-source players; through Tekkit (withfare less servers), but just as active players. With a server tree people will go through them and find what they're most comfortable with.
So as far as your suggestion of 'suggesting' plugins, ways to improve KraftZone with 'ideas' goes, I think I hit that nail on the head, no?
To sum it up with your "suggestion":
Idea: My suggestion of the server is my idea.
Plugin: Plugins are add-ons; technic is an addition to technic and minecraft.
Beneficial to KraftZone: Player count, donations, community.