I can't see a Ryanair plane wait for other passengers that are arriving late on another flight. Plus allowing connections wouldn't give Ryanair the same flexibility to just change schedules and flight times everytime it suits their needs. It's just too complicated for their operational system.
Well, the statistics would actually be in favour of FR connecting flights. Allowing minimum 2.5 hrs for the transfer (why less?) would make the loss of such a connection by pax very unlikely. Worth considering, but frankly, I don't believe FR would bother. Not their style so far. Even so, FR should re-think its schedules in order to faciliate kind of un-official connections (pax being self-responsible for making them).
Pee has mentioned Finland, let's consider Tampere. An ideal solution to give a boost to such kind of travelling would be to have a daily flight to, say, HHN in the morning with a return flight therefrom as late as possible. There is no base in Tampere, how to achieve it? Well, here is an example, using a 'triangle' concept:
daily flights:
6:30 NYO - 8:30 TMP (originating NYO)
8:55 TMP - 10:25 HHN
(all flights from 12:00 onwards avaliable for Finns)
10:50 HHN - 12:45 NYO (back to NYO base)
-----------------------------------
17:05 NYO - 19:05 HHN
19:30 HHN - 23:00 TMP
(Finns arriving at HHN before 6 PM could return home)
23:25 TMP - 23:25 NYO
By using triangles one can create kind of "feeding" flights reflecting the prevailing direction of travel (morning/evening). Also possible: day trips (like in the example above for Swedes to Tampere).
And of course, TMP is only given as an example here. Generally it is more important to have flights from small airports to centrally located bases in the morning with an opposite trend in the evening.