1) In terms of prices, or what? If that's the case, the prices are already cheap enough for everybody to afford decent amount of ammo and weapons.
2) These additions seem quite interesting, would be nice to have them. Players would have the motivation to work for more advanced stuff on the server. +1
3) Never. I guess 2shots not being allowed is what makes LW unique in a way, and the fights are more balanced than in other servers. Personally, I've disliked 2shots ever since i joined samp and the reason being plain simple; those ruin the fights, makes them last shorter and you face a wall of bullets (almost) without a chance to avoid it. In the past, when the lead aim was still a thing, you actually stood chance against rapid use of sawns, especially the skilled type of players. Today, it's not even worth discussing why it's bad.
4) Myle has said pretty much what i think. Teleports alone can be abused a lot, and i don't actually see any use of them with the features we have.