Merpeople would be a new race.
And your Great Great Great Grand-daughter? She's pretty fine.
shame on you for this reference, shame on me for understanding it!
i think in the main things won't have moved on that much - it is essentially due to so many different warring races that each army is as 'unadvanced' as they are currently - basically each race keeps another in check.
certain elements will advance, but that is unlikely to affect the race as a whole.
just my take