While it appears there is no activity on this, if this is accurate, would there be any objections to my Team, being myself and TheRealp455w0rd in taking over updating this mod to 1.11.2//1.12 ?

I'm not sure what you are basing the assumption that this mod isn't being worked on.
I have been chipping away at it for a while - it's a mess but, I have a lot done.
https://github.com/ganymedes01/TheErebus/tree/mc1.11.2
So, yes I have every objection in anyone 'taking over' updating this mod. :P
If on the other hand, you would like to help update it - I would be happy for any help I can get :)
I know TheRealp455w0rd and have him as a contact - I'll DM him and hopefully we can chat 👍

Closing due to this not happening ;)