You can revive fallen allies with adam warlock even if you’re not in range. Since the revive radius is based on adam’s position and not where he drops the ultimate, you can cast your ultimate

If you have issues turning your camera fast enough to do clean dash combos with black panther, consider doing floor dashes. For this you need to get close to your target and look straight down

If you have a Hawkeye player on your team, you can use his team up ability with black widow to see your enemy’s after images which allows you to easily one shot the entire enemy

After using captain america's ultimate, you can hold block and sprint to knock enemies back. If enemies are close enough together you can push them all back at once. Of course you can use this

Blocking with Captain America's Shield actually reflects projectiles. The problem is that the reflected projectiles are not very accurate. But you can circumvent this by being very close to your target. This way you can