London system

Kamsky had a 46% win rate with it against the world's elite.
Dude your rated 2145 Bullet
The London will be as good as you are. (you know this)
Note: if you take it up, a lot of haters will plague you... Gird your loin's, just grin and crush them with it!
Nothing taste better that the sweet dish of revenge!

It feels boring to me but objectively I think it's alright. I've been wondering about combining the accelerated london vs. 1... d5 with the Trompowsky or something else. But the main problem I have is it's boring.
But to spice it up I've been considering these lines...
1. d4 d5 2. Bf4 c5 3. e4 dxe4 4. d5 - looks fun but probably not completely sound
1. d4 d5 2. Bf4 c5 3. e3 Nc3 4. Nf6 e4 - a more sound alternative which actually looks pretty cool
1. d4 d5 2. Bf4 Nf6 3. Nc3 - just flat out playing a Jobava
1. d4 d5 2. Bf4 e6 3. Nc3 - can transpose into a Jobava sometimes. 3... Bd6 is kind of meh though
But this seems good against caro-kann and maybe french players cuz if you typically play the jobava you can just bypass those lines in the chigorin
mainline london is alot more boring though, I'm not really a fan

The London System, in any one individual game, is not bad. Even Carlsen has played it occasionally.
Playing it exclusively every time you have White is a really bad idea. The opening is monotonous and you will never get diverse pawn structures, blunting your chess growth!
Also, it really should only be played against 1...d5.