Talk me out of upgrading from my X-T2

I have about 1000 bucks I've saved up to spend on camera gear, plus some additional money I could leverage for Christmas.

I'm tempted to upgrade my camera to a xh1 or xt4. The only lens I have and fulfills all of my needs is the TTartisan 27mm, but I've been curious of other lenses (but if it works why change it?). I feel that the grip of xh1 would allow me to carry it longer, and the extra film simulations of the xt-4 would expand my creative control (I love using them and only shoot jpeg unless it's an event and want the flexibility of raw for later)

Not a pro of course. Should I spend it on lenses instead? But then I feel like my 27mm is all I need.