There are many awesome games made in RPG maker, so it really depends on the content. RPG maker is probably one of the easiest tools for developing games, so if you think you want more, you can try to learn to use some new engines which expand the possibilities of your game. I played your game for a while, the art is good, the whole system is already there I think. Something you can improve is the transition between scenes. Because even if you have a great story (which I think you probably have), if the topic and scene are switched too abruptly and frequently, the player may not be able to catch up, as they may not know the story as clear as you do. So try to arrange the events in a more fluent way I guess? I'm not a pro, it's just something that pops up in my mind when playing it :P
Great effort put into the game, keep on!