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Unless you've modified the KeepalivePeriod in your torrc, it should be using the default value, which is 300 seconds (5 minutes) according to the documentation.
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No, this would not make Tor any better. This is why.
A bridge relay is your guard entry to the Tor network. What happens after that node is not your concern. Even if your country blocks all relay nodes the bridge takes you outside the country and from there on it has no problem connecting to other relays. As long as not the entire world is blocking Tor ...
1
Tor Browser doesn't remember the zoom levels in order to reduce your browser fingerprint. In fact, having variable zoom levels per page could actually make you more unique.
That being said, you can change your settings in order to remember zoom. This involves changing the browser.zoom.siteSpecific property. By default, the browser will resist this change ...
1
No, making every relay a bridge would not be better.
In order to setup a circuit (a connection from a client to an exit node or onion service), the client needs to be able to pick all the nodes in the path. The client can only pick nodes that it knows about (can't pick something you don't know exists). The whole point of bridges is that they're not ...
1
Only the developers of TBB could answer your question with 100% accuracy. A couple of possible reasons include:
The TBB developers haven't gotten around to it yet -- either flipping the switch, or (probably more likely) doing an analysis of the privacy trade-offs that would result from enabling such a setting; or
The TBB developers are dead-set against ...
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