A few questions about PvP and weapons

I got three short questions and I hope somebody can spare some time on them. Thanks so much.

1) Do you guys know if there will be better weapons coming out in the expansion pack? Like higher damage and mods? I got a perfect mod Fiery Dragon Sword and I'm struggling if I should customize it...Any thoughts?

2) I find it difficult to encounter several situations in PvP:
- when a necro or mesmer degenerate your health (there're like 8 arrows pointing to the left..... <<<<<<<<). How can warriors dual with it?
- when a ranger or mesmer put you to blind. (that's annoying and the only solution is to use skills that won't miss or run?)

3) Why most people prefer "Charge" but not "Sprint"?

1) im 99% sure max dmg will stay the same , the only new weapons will be new skins + the asasin and rituralist weapons

2) healing sigit , hex removel , condition removel , smite hex is quite tasty when your up close to a enemy

3. acault quite a lot of people prefer sprint , chage is a shout and not stance so when running through areas with knockdown you can use charge + blanced stane to get through tough spots ,but most runners take both , if your talking in pvp , some 8 vs 8 builds use them as just a speed bonus.