Basically these are the common set ups.
1. Trunking. Most reliable solution, but potentially messy and ugly.
2. EoCC. If you have a network data point within 2m of your TP, you can consider this solution if you want to stay with StarHub. It makes use of existing cable TV points.
3. Wireless Mesh. Available for Singtel tv. Potentially expensive if you have many TVs. Need one main mesh router at the TP, and additional mesh device for each additional TV. Uses the UJ45 port from the mesh device to connect to the TV box. For reference I’m using 4x AirTies 4930 for landed and they work perfectly covering a v huge area.
untested: if u are already using powerline and it works well for you, I reckon there should not be any problem using it as a data point. Telcos won’t provide support for it though.
If you already have your own mesh routers, u don’t have to get them from Singtel. Any mesh device will do as long as they have a gigabit port to connect to the tv box. With that said, I think netgear orbi has the best performance currently (but really expensive). I’m using AirTies (about 1/2 the price of orbi) and they are good too. TPlink etc will have weaker signal but as long as it works for you...
so if you are considering mesh solution, u can buy the device and test yourself if you get good signal and performance first, before actually signing up with Singtel (unless you want the AirTies).