I'd decided that if you wish to go this route, you may involve a Dark Evolution line to go along with the normal line of Evolution. Dark Evolution only takes affect from Perfect and up. 
I'v decided that i'll use [url=http://wikimon.net/Sagittarimon]Sagittarimon[/url] -> [url=http://wikimon.net/Imperialdramon_(Black)]BlackImperialdramon[/url] as a Dark Evolution line, replacing [url=http://wikimon.net/Magnamon]Magnamon[/url] -> [url=http://wikimon.net/Imperialdramon:_Paladin_Mode]Imperialdramon PM[/url].

[@tobiax] The max amount of tamers is one, the max amount of supporting characters is as may as you can personally handle. I will make a few supporting or antagonist characters when the time comes.