My idea is to create a mod with multiple bluetooth transmitters and possibly a few Bluetooth receivers problem I have had is simply having a bunch of bluetooth enabled speakers whether they be part of a light bulb or standalone even on the new Bluetooth standard you can only connect to two devices sun containers. I would like to be able to route the audio out on the Motorola Z4 and find a way to keep all of the Bluetooth transmitters synced so that cheaply I can have a whole house music system it probably would be a plus to even have a way to connect to several Wi-Fi speakers as well I could yeah they're stream music or go on YouTube and play a song I like and from within the app created for this particular mod I could put a check mark beside all of the speakers I want to use it would be great if I could just open up a music channel on my fire stick or my Roku device or even just watch a regular movie on Netflix and in that case pair my phone in a way that it receives what's being transmitted from the fire stick if that's too difficult I could purchase a standalone Bluetooth transmitter that I can hook up to the audio out on my television or sound system or whatever device I'm wanting to use maybe I might want to use my Amazon echo device and be able to pair the echo device as the sender so that it can interface with my app and then route everything coming in to see Bluetooth transmitters that go to individual speakers to make it really really interesting each Bluetooth device that is part of the mod could be set up as either a transmitter or a receiver so that for example I could have a Bluetooth microphone that is coming into the phone and then transmitting out to all of the speakers I select I'm saying speakers that's assuming the Bluetooth transmitters are going to actual speakers. Initially I would like it to be set up specifically for sound and music I got very frustrated and when I went out several years ago and bought four Bluetooth speakers just to find out that I could only connect to one of them at a time on my phone I found an app that allows you to use other cell phones as a means to transmit wirelessly music to all of the phones that are connected and then you can either come out of the headphone jack on that phone or use that phone's Bluetooth to connect to a speaker the app gets out of sync one nifty feature is that you can advance or retard the music feed exiting out of each Bluetooth device so that you can manually get everything in sync I'm not very good at software I'm pretty sure just building something very similar that's not even part of a mod I could do with very little effort. Maybe after all the bugs are worked out each individual phone that happens to be in my home could also be paired too my Bluetooth router mod so that whatever I am outputting could also be output to another person's phone. Then maybe advancements can be made within that app or other apps can be developed to work with the bluetooth/ WiFi wireless mod so that if you wanted to partially do away with OTG cables or use OTG cables to enhance my next idea. Example could be having a Bluetooth keyboard a Bluetooth mouse Bluetooth memory stick and for example an old tablet. I could use the mod to basically have and ad hoc PC or Android device or I could use keyboard mouse and flash drive to control the same phone that the mod is connected to. I know there are variations of many of the things I have stated but nothing I have found that gives the control I am imagining. Last part probably a little bit beyond my skill set however I mentioned Wi-Fi to be able to send a Wi-Fi signal to the mod such as a Wi-Fi light switch on the wall and be able to reroute it through a Bluetooth transmitter and vice versa could make serious dent in the smart home automation category especially for people who thinks hitting a button is more convenient than having to speak out the commands. I guess we could call it a Bluetooth and Wi-Fi input output routing app with mod any ideas or if anyone knows something similar is already in development or already exist let me know