The signal amplifier has been installed in AS's for some time now. My 1987 Excella has an amplifier built in in the cabinet under the television, and it has a 12-volt DC outlet as well.
The batwing antenna is a good directional antenna, and the old ones can be updated with additional UHF elements, which just clip on. Using the Android app "DTV Antennas", you can quickly position the antenna to get a decent signal.
I also have the Roku stick. However, using it quickly consumes my allocated Verizon data. OTOH, I still have the "Cantenna" which is great for pirating wi-fi. Back in 2006 I was having some repairs done to my '94 AS LY moho at a remote shop near St Thomas ON. I spent the night parked outside that shop, and noticed a distant farmhouse (about 1 mile away). I set up the Cantenna and pointed it at the the farmhouse - bingo! I was able to get my email.
1987 Excella 32-foot
1999 Dodge Ram 2500HD Diesel