* slow website -- the old site was also slow, and would frequently go down with any significant traffic; considering things just started a lot of people are probably accessing the site I suspect it's actually better than before
The problems with the old Club Nintendo site were wildly overblown, and the main time that it had stability issues was during the last few months, when Nintendo no longer bothered to maintain the site. Before the announcement of the shutdown, I never had any issues with the site, and it wasn't slow for me. Of course, since the stability problems were during its final months, it's unfortunately become a memory that sticks into people's minds.
Even still, since being able to access the site on a given day isn't essential, I'll gladly take rare occurrences of site outage over a site that's slow-as-molasses, as the latter is a problem all of the time instead of very rarely. The slowness seems to be caused by a lot of unnecessary graphics and animation that it uses, so I don't expect it to change much with less traffic.
* no physical rewards -- the old Club Nintendo had already (essentially) transitioned to this with digital downloads
They were still offering some physical rewards towards the end of things, such as the sweet 3/DS game card case. Some is better than none.
* some rewards will be offered for only a short period of time -- this happened in the old Club Nintendo with limited physical goods that quickly disappeared, rotating digital offers, and occasional special deals
That's true, they did cycle through the digital games. I hope they do that same thing with this new site as well, to give people another chance at certain rewards. Still, being the same isn't
better, and
better is what I was hoping for out of the new MyNintendo.
I know, I know, in the grand scheme of things it doesn't really matter, it's just an optional rewards program that offers only bonuses, no real negatives still. Just something I like to talk about.