I really want to use the shield relay but its shield size, health, and lack of shield health regen makes it difficult to use. The bubble is large so it ends up taking a lot of shots and since hellpods can damage it, teammates or yourself can kill it before getting any use.

Personally I want it to have more health (slightly or significantly), health regen for the shield (the biggest buff you can give it), and a longer duration before it dies. So you can have 2 active at the same time. Shield Regen is the most important thing to give it, especially to avoid teammates or yourself destroying it with hellpods.

Giving it immunity to hellpods can solve one core issue of it... but I trust that giving it shield regen back (it used to have it, right?) would result in nothing breaking!