To open or not?

East should probably open 1♠ with 10HCPs, meeting the rule of 20.and a good rebid.

West will bid 2♣ and North would want to bid with good ♠ s that have been bid and could be taken as Michaels showing 5/5 in the unbid suits and a double would show ♥ s and ♦ s, so will have to pass.

East will bid 2♦ to show second suit and West will probably raise to 3♦ that will be passed.

If East does not open it will be passed around to North who will bid 1♠ 

East then may bid 2♦ and south may support with only 3 card suppport with 2♠ .

Wests hand is looking good and will bid 3, 4 or 5♦ . 

North will bid probably 3♠ over 3♦ or even 4♠  over 4♦  as Souths bid of 2♠ is a weak bid (3♦  by south would be the strong bid).

so almost any result depending on whether East opens. I htink they should open. 4 out of 4 different results!