How Fuse plays really depends on coordination between teammates... or you could just... tpk.
But in all seriousness, Fuse is a great op but can be difficult at times (just hostage). Helps when it comes to finding out if someone was in thae capture area or if they are just sitting by the bomb. His loadout could use a little love in the future but is sufficient enough to deal with most circumstances (shield is annoying to deal with tbh). Sure he is slow but he is basically a walking tank. I recommend communicating with your team to make him as effective as possible.
Nomad. Use her gadget both defensively and offensively and you should be fine.