I'm not sure if this thread is supposed to be about the Juno 60 specifically, or about limitations in synthesis, but I sort of feel like hitting both of those points.
I have good memories and impressions of old Roland analog instruments. The first synthesizer that I ever played with alone for more than a few minutes was my friend's mom's Alpha Juno-1. I didn't do any programming, but I loved the deep pad sounds of the thing. It's still a sound that I enjoy. The Juno 60 and Juno 106 have the same strengths. Outside of the rich deep strings and pads, they're not terribly impressive. But what they do well, they do well.
Edit: I read the rest of the Prophet 08 thread, and I now realize that this topic was started to keep that topic from going off topic, and everything I wrote below puts this topic at risk of going off topic. So, please disregard what follows, and stay on the Juno 60 topic.
As far as instruments with limitations, I'm terribly fond of my Little Phatty. The thought of giving up the LP keeps me from getting serious GAS for anything, including more capable instruments like the Pro 2 or Sub37. It has the bare minimum of what might be acceptable for a real synth, with just enough uncommon extras (1-pole filter, filter overdrive, Osc 2 as an LFO source AND destination) to keep it interesting. But the natural sound of the thing makes me happy, even with the lack of advanced modulation options. And if I ever want to, I can always buff it up with a CP-251 or a Korg SQ-1.
There's a lot to be said for the ability to just dial in a decent sound without having to think too hard about it.