Assuming your post is the result of a bad Monday I take the time to answer you.
It IS possible to develop your own data model for utility network; It's a complex and cumbersome task though. I suggest referring to the electric data model released by the Utility Network Community - freely available. We are actively migrating into this data model with very positive result.
The data model is freely available here: utilitynetworkcommunity.com
A LinkedIn post on our migration to UN: https://www.linkedin.com/pulse/migrating-arcgis-utility-network-jens-dalsgaard/
With respect to tools: Esri is delivering a framework - a very flexible one indeed. Any partner with the right skills may create tailored functionality further increasing usability.
Don't give up to early. ArcGIS Utility Network is not to be abandoned - it is destined to rule the world 😉
Jens Dalsgaard
Principal Product Owner
Power Grid, V O L U E
jens.dalsgaard&@volue.com
Volue Technology Denmark A/S
Alfred Nobels Vej 27
9220 Aalborg Øst, Denmark
volue.com