If you want to spice things up from a weapons standpoint, take a look at the CROSS PlasRail. It adds an excellent weapon into the mix.
The CROSS PlasRail is a customization gun that comes with five different barrels, each with their own unique method of destruction.
You can create the gun at a Chem Lab if you're high enough level but it'll also drop on enemies of a certain level giving you something to work for. (And for those that don't want to level or battle enemies, it's also hidden around the Commonwealth.)
It's an excellent addition to any arsenal and it seamlessly fits into Fallout 4's world. It feels like it belongs. Give it a try and see if you agree.