I advocate it as well, but with S4 torps if that's what the other variants get.
Admiral, I think you over-rate carriers.
On a 6x4' board, starting at opposite long edges, with the Endeavour Closing and Defiant Abeam, the defiant, doing everything it can to evade the Endeavour, will get off 3 AC waves before the Endeavour gets into weapons range, doing 6 attack runs. The Endeavour is free to go on Lock-on to try and swat the waves, and free to brace if it fails, as it isn't doing anything else. Assuming the AC don't get swatted, it will do 4 attack runs against a braced ship, and 2 against an un-braced one (because the Endeavour will imminently be in firing range and would rather Lock On.) The Endeavour takes 1.33 hits average before entering weapons range.
Thereafter, the Defiant's lances will only damage the Endeavour's hull in 1/4 of shooting phases. The Endeavour will do 0.6 hits with its torps, (1.3 hits if S4), and then 0.3 hull hits (1.3 if locked on). The Defiant cannot brace, as it depends on its AC, and it cannot lock on, as it depends on its AC.
In the following turn, the Endeavour closes to close range, and from then on it's all going the Endeavour's way. As soon as it's crippled, S1 AC pose no real threat, (being shot down 75% of the time by 2 turrets) and S1 lances won't ever get past 1 shield. The Endeavour, with S4 WBs, can still pose a threat, even when crippled.