If all he wants is for users to be able to send kudos back and forth, he could make the difficulty trivial, mine a few million/billion coins on a network of 1, and then distribute as he sees fit.
Hike the difficulty, how? Hard fork? And even if you could hike difficulty with consensus, then you'd be locking yourself out of mining any new blocks, and your blockchain would stall! An altcoin is not a good solution for the proposed use case.