I'll check how feasible this is.
I already use tvheadend +rpi+dvb-hat for my TV needs.
I have about 20 Pi or other SBCs deployed around the place. Fantastic bits of kit.
I managed to find some relatively inexpensive USB DVB-S2 adapters that work well with the Pi. They have external power supply for the dish. I've had one of these running faultlessly 24/7/365 since the end of 2017 alongside an old Dell PC with a PCIe card and twin DVB-S2 tuners.
I think I actually prefer the Pi based setup as it's low power and low cost. I use a Raspberry Pi 3A+ but I reckon even the new Pi Zero 2W should be capable enough.
Here's my kit ...
For the Raspberry Pi (via USB) : -
Hauppauge PCTV DVB-S2 Stick 461e (USB tuner, Pi compatible) £93/88 currently (was £79.99 when I bought it back in 2017)
For the cheap secondhand i5 Dell PC :-
DVB Sky S952 v3 PCIe card with 2x DVB-S2 (twin tuner) - currently unavailable from the supplier I used in November 2017 when I paid only £64.90 for it
Free delivery and returns on eligible orders. Buy Dvbsky S952 V3 PCIe card (low profile) with 2x DVB-S2 tuner (Dual Twin Tuner), CD with windows software at Amazon UK.
www.amazon.co.uk