Issue with progress calculation basis submitted or validated real work

Not sure if this has been brought up earlier. I have an activity on which a few resources are affected to. Each one can enter real work allocation, so that it is rolled up for final progress of the overall activity. What I observed is that whenever a resource enters -- submits -- real work, the progress of the activity increases. Now this is tricky. There is a facility to enter work in future also. The tool just pops up a message - "I am entering real work for 5 days beyond today" - and I just click ok. This is not a stopping message.

So here is the situation: My activity has validated duration of 90 hours. There are 3 resources with 20, 30, 40 hours assigned to their respective work. Assume that the resources entered all the work in future 7 days, today itself. Now the progress of the activity will be shown as 100%, for today. But in reality, the progress will not be even 10%. I hope I am able to reproduce the issue. How do we handle this?

Some suggestions I am thinking of:
(1) I guess future work entry should not be allowed. But backdated entry should be allowed for a few days -- I should be able to decide this number (5 days, 7 days, etc.).
(2) Progress should be calculated only on the validated work, and not basis submitted work.

Please advise.

Thanks Babynus. I agree, suggestion # 2 will be useless if #1 is implemented. However, I still believe work done in future (say more than 5 days from now) should not be allowed.

Is there anyway I can ensure this in current release (v 5.3.2)?