It is not only that we need Lord Caitanya in this age to make it possible to attain Radha and Krishna. No, Lord Caitanya is our Ista-deva! Lord Caitanya is our worshipable deity! Lord Caitanya is the most important actually!
This day is more important than Janmastami.
“Oh, what is going on? What can we speak here? Can we hear this?”
This day, Gaura Purnima is more important than Janmastami, because it is the mercy of Lord Gauranga that makes it all possible. Without Lord Caitanya's mercy, we will never make it! We will never make it!
Not with all our devotion - which is very meagre in this age of Kali;
Not with all our learning - which is very poor in this age of Kali;
Not with all our intelligence - which is almost non-existent in this age of Kali;
- would we ever have an opportunity to actually develop pure devotional service.
But by the mercy of Lord Caitanya it is possible.
(HH Kadamba Kanana Swami, Sydney, Australia, March, 2011)