First of all, congratulations on your escrow. There's never been a better time to buy a home!
My general answer would be to say "NO! NO WAY!" But, If you were my buyer, there are variables that might cause me to say "Yes" in very rare circumstances. If you don't mind donating time, money and energy to someone's home then you may want to proceed. But let me share a story.
Several years ago, on an approved short sale listing, I arrived at the vacant house to find the buyer and their family painting, doing flooring and some minor repairs/upgrades. They had just received their loan approval and apparently their inexperienced agent had told them it was a "done deal". I told them the same thing I ALWAYS tell MY buyers, "nothing is over until I meet you at the house to give you the keys & your closing statement." Then I politely explained to them about the legal ramifications of them doing what they were doing, told them all to leave and proceeded to change the lockbox code. It could have all worked out fine in the end, but...there's more.
Four days later, Freddie Mac foreclosed on the home. The buyer's inexperienced agent then told them what had happened and apparently didn't relay the info I gave to her because her outraged buyers fired her. Wait for it...there's more!
I jumped in to action and was successful in getting the foreclosure reversed so we could proceed with our short sale and still close on time. I contacted the buyer's agent, who in turn contacted her buyers. Incensed at the money they had already "lost", they apparently decided to take a break from looking for a house. During the short time from Freddie Mac foreclosing to me getting back to them, they decided to purchase a new vehicle. Unfortunately, this threw their qualifying ratios out of whack and they no longer qualified for their loan.
I won't bore you with the details of the lawsuit they filed which, by the way, they lost. But I will say the new buyers of the home LOVED the new paint, flooring, & upgrades.
So, if you haven't given up and you're still reading this long answer, I believe there are two good things to take away from my story:
1. "Nothing is over till it's over" so don't do the repairs
2. Don't work with inexperienced agents.
Good luck with your escrow!