No, he did mean it, it was the elders who were undermining his choice, just like they undermined Hiruzen when he wanted to try and settle things peacefully and talk to to the Uchiha.
The elders were being unfair to the Uchiha from the start, Tobirama had nothing to do with that. The elders had the Anbu watching the Uchiha, that's why they moved them to that small corner of the village to distance them from the other villagers and keep a better eye on them.
Yes it was, he made it as a symbol of trust between him and the Uchiha, showing them that he trusted them with their lives. The elders are the ones who made it into an issue when they moved the Uchiha unto that small corner of the village in order to keep an eye on them, that was no Tobirama's doing. Was he perfect, no he probably wasn't but he wasn't as bad as you're trying to make him out to be.
Tobirama made way more mistakes! If you think Tobirama does not take credit for his students actions than why mention that he was a sensi? Tobirama only did one thing right which was establishing the village! The police force was not something he made with good intentions
Sure, but I was thinking about it and maybe I should do something like what we are doing now, we create the characters and their jutsu, unless we want to give them jutsu's that already exist, put them in certain situations and explain how said character would succeed in that situation.