I just want a private wallet so I can stop leaving my coins on liqui/waves I don't trust them
....
is there one already? xD
Why not have? You can store your token MobileGo or any token use platform Ethereum with:
1. MEW wallet:
https://www.myetherwallet.com/ (use private key)
2. Mist / Geth / Parity: Use your Keystore File (UTC / JSON) to access your account. Please seach on google helps me ^^