Not a review, but a layman's response...
The concert, for me, took off with the RTP, and I could have done with all three parts of that being longer (OK, all four, including the thani).
I could have done with more heavy-weight stuff in the first part of the concert. It was revealed at the end that she had a sore throat; had she been in good health I think we might have seen much, much more, both in terms of duration and content.
The RTP was rhythmically difficult, being in adi talam, samum edipu (ok so far...) khanda nadai --- but, although the talam was put in khanda nadai throughout the cycle, the laghu (first four beats) was in chatusra nadai.
This is the sort of thing that, trying to understand it makes my brain hurt! Ram, after the concert, showed how easy it is to put khanda nadai, and say chatusra. Easy for him!

To be honest, I think I might have been able to do it (but only first speed) when I was regularly in mridangam class; but not now.
This was a concert in which the three musicians seemed completely in touch with oneanother. I was particularly impressed with Phalgun's mridangam playing, and very interested to see that he uses a fingering technique that my guruji and only a very few other mridangists emply --- using the second finger, rather than the ring finger to touch the edge of the black when playing nam and dhin). He not only met the challenge of the difficult talam, but played such that I could appreciate the musical beauty without having intellectual understanding. I do think this is important in mridangam: we are not all mathematicians. I hope to see him play again soon.
I was happy to hear a thillana at the end of the concert too: another of those items which, to me, gives a concert completeness, but is often missed out. An old favourite from BMK too.