I’d advise reviewing the gauge framework proposal to understand when the 2% cap comes into play. In this case tBTC is freely mintable with BTC so there’s no reason a cap is required.
In terms of giving ppl more time to discuss, please don’t let the fact that this is queued for a vote stop you from initiating a discussion. You can review the latest governance process but the tldr is there’s no requirement for any discussion phase before a BIP can go to a vote.
Most of the time gauge proposals have zero discussion regardless of whether they sit here a day or 7 or longer. You can browse through previous BIP’s to get an idea of how many have any discussion at all (a small minority).