I think the problem is that Islington/Bloor is seen as being a potential mini downdown (a'la Y/E, NYCC, etc. To do that, much of Islington station should be heading underground. By moving MT to Kipling (which is designated as a regional hub) the demand for bus bay will be reduced.
Kipling is fine as the hub as it's the end of the subway line and should behave much like Finch does for the north/central region.
Moving the MT terminal hub to Kipling is ill-planned and premature. The very GO line that passes by Kipling, also runs by Islington Stn. Only dif, interchnge between the two systems would've been seamless, try saying the same for the current matrix at Kipling at the westernmost exit resulting in a very long walk for boarders on the far-right of trains.
Also being at the end of the line, MT/GO commuters boarding at Kipling would be forced to await the arrival of one eastbound, pray it's not out-of-service, have it parked there for upto five minutes, than await another train to depart with a very slow approach to the next station.
Street life in the Six-Points vicinity is sub-par. It comes as no surprise that some passengers exit Islington and go into the Clarica Centre to do some on the way shopping or buy a decent meal (does Kipling even have a shopping concourse a la Islington?).
Don't even get me started on how to overcome the massive gridlock that'll result from adding 16 MT routes to same general area as 12 TTC routes, when at least routes 3, 11, 20 and 26 could bypass that part of Dundas. Oh and yeah, elevating Bloor/Islington to city-centre status, which employs alot of Mississauga residents hence destination, only to take away the blood vessels feeding its heart is beyond dumb.
So for all those reasons plus the likelihood that the BD line will extend even further west by which a new terminal will have to built to accomodate MT vehicles, it appears that the Kipling reno was millions wasted on nothing.