Glad to hear from you, Wisdom-! No guarantees that my solution is better than what you made yourself, but I am pretty happy with it. All abilities are contained within their own blueprints (parented to a new class called Skill) and are spawned onto the map when they are needed. I initially felt this method was a bit awkward, but it seems to have been the right choice. This way you do not need to bloat your pawns/Grid Manager/whatever with tons of nodes that might not be used, and just spawn as needed. It also makes it really easy to make new skills and has other benefits such as being able to store the skills of a specific unit in an array ++ Looking forward to hearing your feedback when the update is done.
As for multiplayer that is something I’ve thought about implementing for a long time. There are just so many other things that have taken priority, but it is something I hope to implement in the not too distant future. When I make the attempt I’ll surely get in touch with you when I do, since you’ve looked into this already.