You should definitely try the Zero series it is fun, yet hard. Megaman Classic, X, Zero, ZX, and Legends are all main timeline and Battle Network, and Starfroce are alternate universe.
BTW you said you played the Legends Series? You do know about Legend 3 right? It is a project tin which the fans can compete in character design contest and stuff. Here is there promo: [link] and Here is their group on capcom.com if you interested: [link]
which on was that the easter egg thing? I had 0 ideas for that. I had a idea forthe Event 6 Promotion ideas thing though. But that s over now, there will be more contest, and they wont all involve drawing, so I encourage you to join, if your really interested.