I'm no master, but I peaked around 1800ish so this seems like my ideal demographic.
Like you said, I think it's definitely better to be good at just a few openings than playing all of them equally bad.
Personally, I don't think I have more than 4 openings total in my repertoire (although I haven't played seriously in about a year). I have two for white, my Colle System + some sidelines in case they avoid it, and the Catalan, but I use the Colle much more often. As black, I play the Alekhine's defense against 1. e4 and the Budapest gambit against 1. d4. Those don't seem like the openings you're looking for, but I'm just giving my personal experience on how many openings someone should be playing to get to that rating point. Using around 4 and being aware of the general ideas of the other openings has served me well (or used to).
You should experiment with both 1. d4 and 1. e4 to see which type of game you prefer, but I'd recommend playing the Vienna game as white based on what you said. Rather easy to learn, and doesn't have vast amounts of theory to go through. Most games involve some sort of attack on the kingside but the game plans are rather fluid and flexible. But once you choose between 1. e4 and 1. d4, you should stick with it. Don't start messing around with entirely different games just to expand your opening repertoire. Stick to one
As black, I think the French defense would fit you well against 1. e4, which relies more on your knowledge of the pawn structure rather than lots of theory (there is a lot of theory to learn if you go out of the way but it's not necessary).
Against 1. d4, maybe the Queen's Gambit Accepted would be for you? Just take the pawn and develop normally without trying to hold onto the pawn and you'll end up in a rather open position for a 1. d4 game.
Let me know if this helps, I'd be glad to play a few games with you if you wanted to practice too. lmk
Hey Ladies and Gentlemen,
I am currently going for the 1100 rating and am aiming for 1500 as a big milestone.
Since I thought about it, it seems logical to me that one should stick to a limited opening repertoire to deeply learn how they play out.
Now I am looking for a limited opening pool to like 4 or 3 for both sides. I am considering if one could also get away with something like only playing e4 or only playing d4. Besides, I don't want to spent hundreds of hours learning something like the theory lines of the ruy lopez, so something more modest would interest me more.
TL;DR
what are some simple, aggressive openings that are worth sticking to for a long time?