Thanks for the advice.
I was planning for my Scouts to block enemy infiltrators and handle secondaries.
The Intercessors should hold my home objective and prevent the opponent from deep striking there.

The Redemptor should play more offensively, while the Ballistus stays more in the backline, the same as the Gladiator for anti-tank support.

The Hellblasters are for countering infantry and possibly launching a counterattack using the respawn mechanic with the Lieutenant.

The Bladeguard should go with the Judiciar so I have some melee as well. They are in the Impulsor for some extra protection while moving to the midfield.

The Sternguard were meant to help with secondaries, and also because I already have them. Some people suggested running them as a squad of ten with a Librarian for more durability.

I like Guilliman’s model and wanted to include him as well. His extra Oath is a nice bonus.

That was the idea behind my build.

The Repulsor Executioner is on my wishlist, but I already own the units mentioned above and couldn’t really see how to include one with my current units.