bkolobara Yeah, trust will always be the case. I'm thinking the wallets don't have this problem anyway since they ARE signers and (at least technically) owners of your in-wallet account . Whether they will implement "adding" custom/random coins is a different question.
In any case, I'm going to open source it, provide links to all the code, can be peer reviewed --- it's built on React, UIKit and is behaving really nicely, and will work for guys such as e.g. Sudokoin, that have mini pilot apps and their own token with great potential where it's just really a pain in the ass and they lose a lot of prospective users because of this bottleneck.
Been really inspired a) to work on Stellar, b) to learn some more React, so all in all so far I've been having a blast. Thanks for the input!