Very pleased that you have enjoyed your deserved "sabbatical".
When I review my past and current study of scripture and commentaries together with my many years of hearing the excellent sermon series by very well trained bible expositors I am persuaded that the doctrine of salvation by grace and sovereignty are the predominant understanding.

When I think of my eternity with the triune God It seems apparent that just meeting interacting with all the believers, learning the thoughts of God more completely, enjoying the company of all your believing loved ones in near perfection could never be boring.

The concept of eternity is overwhelming when one considers the concept of "never ending". That alone is incomprehensible to the human mind. My thought is that time itself will have no meaning or operative existence in heaven and since everything in our current universe has a time dependent aspect, it is likely that the new Heaven and earth is incomprehensible to our minds"scientifically"