Great points and exactly my thinking! Of course not everyone will keep an eye on it but I am sure a lot will... I know I would and yes I have sat staring at my miner many a time, as well as the pool data lol

So I take it you would use a service like this?
Well, I don't have an infinicoin wallet to begin with ^^
But I'm really not sure how this service would affect users ...
Because of the mostly speculative aspect of today crytocoins, they display a strong instability in price (bitcoin included of course). Except when instantly exchanging any crytocoin income to fiat, there is no way sizable businesses (I mean where you can buy real life goods) would run on crypto as of now.
If a lot of people (or maybe more importantly) a large fraction of the money supply is kept in such service, this would probably help stabilize the price (which is maybe what is the most needed for any non "pump & dump" coin !).
This would be in the best of the worlds ...
But in the current world, there is also a risk for the holder if the market crash as he can't react and try to sell to minimize his loss.
Also, the sustainability of such a service is not assured if sizable amounts are sent to it.
Last but not least, the temptation to run a ponzi scheme is high (à la Madoff or pirate something as seen with bitcoin, where you pay interest on the money newcomers deposit) ... Well some would argue cryptocoins themselves are just a big ponzi-scheme ^^
EDIT: corrected ... Madoff instead of Markov, lol !