Rein shield for example, would you recommend the team killing the shield to make Rein kind of useless defensewise, or would you leave the shield alone.
Depends on what heroes your team has.
If you have heroes that pour out insane damage fast (junkrat, soldier, sojourn, hanzo etc) you can just melt the shield.
Another option is if you have a dive comp, just go through the shield. He can’t block you with it if you’re in his face.
A good idea is always to try and pick off his supports.
depends on the situation. If he is far away from your team you might as well try to shoot it so the dmg and support behind him can be sniped. But if you are on a map where you easily can go around him then you should do that
Depends on what heroes your team has.
If you have heroes that pour out insane damage fast (junkrat, soldier, sojourn, hanzo etc) you can just melt the shield.