Pumkin Ale with a kick

Hello all,
So, I brewed a basic smashing pumkim from northern.  I added some extra nutmeg and allspice to kick up the flavor a bit.  I tested gravity and checked rase and ABV is at 5.5 but taste is a little bland.  needs more sweetness to it.  I did not add any actual pumkin or pie mix, just the Spices at 0 min of boil.

Is it possible to make a small .5 gallon totty of water/Rum/Brown sugar or molasses and boil, cool and add to secondary?  I am going to bottle next week.  Any thoughts on this?

Thanks

None of those ideas will make it any sweeter, it will just boost the gravity/ABV.  Maybe boil up some maltodextrin and add it to increase mouthfeel, but that won’t make it any sweeter?  I suppose adding lactose would make it sweeter.  But, if it were me, I would just leave it alone, but then again, I haven’t tasted the beer.

You could make a tincture of the same ratio of spices in vodka and dose it to taste if you need an extra spice kick.