1.5k Gloomspite List Help

Hello!

I am currently sitting at this 1k Gloomspite army:

1x skagrott 6x troggoths 10x boingrot bounderz 1x gobbapalooza __ =1000pts

I am currently struggling to updgrade them to a 1.5k list.

Does anyone have ideas on what would make sense the most, also in regards of expanding to 2k down the road?

Help appreciated 🙌🏼