It is an interesting idea, but did you know we’ve converted four Ohio class ballistic missile submarines into Tomahawk launching platforms?
The older Ohios had the C4 Trident SLBMs while the newer ones have the D5 Tridents. Instead of upgrading their SLBM capability, they modified the tubes to be able to carry 154 Tomahawks.
Almost like your tanker idea.
Total armament is actually quite impressive: 154 Tomahawks per sub.
But how many do we have? Four.
Even with all four on station all the missiles would be used up in a few days at most.
One carrier (I assume) could carry thousands of guided munitions deliverable by aircraft.