Can RouterOS Forward Broadcast to 255.255.255.255

I don’t want to bridge interfaces but I’d like to have broadcasts to 255.255.255.255 forwarded to other interfaces. Is there any way to do that with RouterOS ?

Kindof. I don’t think you can directly, but you could set a static ARP entry, then use NAT to forward to that IP:

Ex.
static arp: 192.168.1.254 = FF:FF:FF:FF:FF:FF
then dst-nat your specific packets to 192.168.1.254 and they will get broadcast out the interface above ARP entry is in.