Transitioning a Templar Guardian SRS

This is the first time I have actually tried a SRS build, and I'm following Big Duck's guide - https://www.youtube.com/watch?v=wX2zPuinR_Q

On the whole I've found it pretty enjoyable, even if it took some adjustment to my normal style (normally play Boneshatter or Ice Arrow).

But near the end of the video Big-D mentions that the Templar Guardian SRS build is a good base for transitioning into another a different build for late game mapping and bosses.

Just wondered if anyone had some suggestions for what would be a Guardian endgame build?

Any suggestions welcome.

Ta.

IMO it's just sugestion. This build is fully capable of clearing whole game

Thanks.
The build was listed as a starter build, with the suggestion that it was a stepping stone to something else. I just wondered whet the next step might be.

I normally like to try out at least a couple new builds per season.

As for this build, it has become my new Heist. I normally play fairly conservatively, so the SRS build has been ideal to let me sit back and let the minions do the work :)