If you like your jump to be 8 losers, than don't change a thing, and accept your result on this hand (his 9+ losers plus your 7 suggest 8 is the limit). There is no guarantees in bridge. Your loser count was off by one, due to the way the diamond suit matched up. This is the point to your moving a small heart and a small diamond around.
Of course, here is the problem with bidding just 1
♠ on this hand...
1) It allows EAST to easily rebid 2
♦, without promising a lot extra
2) It allows EAST to jump to 3
♦ to show a lot extra
3) It makes it harder for you, the doubler, to know whether to compete to the three level (your partner might have 7 points and five or six spades, or 2 points and 3 spades).
The range -- DISTRIBUTION pattern for your 1
♠ bid is too wide. If your partner had jumped to 2
♠, odd are you would have bought the contract right there. If over 2
♠ EAST bids 3
♦, west might play him for a bigger hand than he actually held (now without a jump to 3
♦ over 1
♠, no chance of that), and bid again.
So, I am a big fan of jumping to 2 of major on these auctions to show five cards and some values (not much...)... and biddign only 1
♠ with some significant values (up to 10 hcp) with only four cards.
You asked
Quote
If the system has to be changed, I'd like to differentiate between:
1. a "mixed" raise (9 losers)
2. limit raise
3. GF hand
I am not sure, you are talking about originally doubler's action here? With 9 losers just pass your partners jump to two level. With game force, doubler can cue-bid their suit or jump to game. With limit raise, opener raises freely outside competion, makes a new suit bid within competition, or if no room exist, uses double.... thus...
(1D)-X-P-2S
(3D)-3H <<---- game try in spades
(1D)-X-P-2S
(3D)-3S <<---- Competitive to play
(1D)-X-P-2S
(3D)-X <<---- Penalty oriented
but,
(1D)=X-P-2H
(3D)-3H <--- competitive to play
(1D)=X-P-2H
(3D)-X <--- Now invite to game in hearts.
When responding to their takeout double, cue-bid by advancer is forcing until suit agreement, thus
(1D)-X-P-2D
(P)-2H <--- 100% forcing.
N....E....S....W
p....1D...X....p
1S...2D...2S...p
p....3D...all pass