Aside from the obvious loopholes (how do you define two laws as being the same -- and what stops your opponent from intentionally sabotaging a law they know you'd want to pass?) there are some other practical issues.

If it applied to all laws, you could pretty easily imagine some negative consequences (attempts for marriage equality or suffrage could have been delayed by decades if the opposition tried to introduce laws in a way that would be guaranteed to not pass). And what if the circumstances change within that decade so that an old law proposal now makes much more sense.

I do think that the law-making process should have quite a few more safeguards. The way that after-the-fact amendments work (in America or Australia for instance) is quite scary -- though Australia does have double dissolution which intends to prevent deadlocks and the Senate changing laws without authority from the House of Representatives.