Unhappy Motorola Defy Green Lens

My Defy is now 4 years old and I love this phone because it's easy to unbrick and this was my first touch screen phone and I know my Defy well but now I'm having a problem where now my Defy is not as fast as it used to be. I have flashed too many roms to count, flashed a sbf maybe 4 or 5 times when bricked, and used the MacGyver Hack twice and after a while I was fine and now I settled for Epsylon Cm9 but through all that my Defy is still slow, (slower than it used to be) at first I thought is was Mokee os being it was Jelly Bean 4.3.1 but it wasn't. My Defy now gets hot when using mobile data, wifi reception is now lower no matter what android version, I also have one of the first made models with green lens and bad ear speaker, and the battery drops from 100 - 94 to 78 - 69 to 50 - 49 to 20 - 19 to 14 to 5 to 4 and dies suddenly in about maybe an hour to thirty minutes depending on what I'm doing. If anyone can give me solutions to my problems, that would be greatly appreciated even though I don't think many can help because I am good with a Defy even though I can't fix my problems with it. I'm also not a developer. Thanks in advance.