You're not the only one who had feedback on the last 10 or so seconds of a run -- it's clear that's a part of the game that still needs refinement so players can realistically get something done at the end of the game.
Having upgrades or equipment to buy between runs is also a wonderful idea -- it seems so obvious now with the score being dollars etc, and could be a good way to add more options and strategies.
Thanks for the great feedback, and glad you enjoyed the game!