This looks like a really good team! Some people might think that ParaFlinch is a cheap strategy, but i actually like it as well!
Togekiss looks great, never tried out a defensive EV spread on it but if it resists a terrakion's stone edge then it sure is good.
as body slam only has 60% to paralyze, it might not always paralyze a pokemon, but as you already have 3 other T.wave users, i don't think it is a big problem (the idea of hitting ground types is good too).
I have tried out tinkerbell myself and it works quite good, but as Electrolyte suggested, a ferrothorn would probably work better to take out dragons. I would use gyro ball on ferro to hit the outrage locked dragons hard, but since celebi was your rain counter, i suppose power whip will make ferro a good celebi replacement.
Rotom looks solid, and as long as he is at full health, you can trick your opponent into thinking that he is choiced (either by volt switching or just attacking).
Both terrakion and salamence looks like great late-game sweepers, so i have no comments for them, as they are as good as always.
I do have some suggestions however, but i don't know if they will be of any help or not.
Jirachi might take many hits, but it doesn't have any reliable recovery move. Why not give it wish? That way, it will heal itself as well as the rest of the team (especially rotom, celebi, terrakion and salamence as they lack a recovery move).
I can also see breloom and poison heal gliscor giving you some problems.
Unless they switch into a paralyze, they will be immune to paralyze and will be able to either put to sleep or poison a member (or more in toxic's case) of your team. Having no cleric will turn this into a small problem.
Only jirachi resists poison, but it is afraid of earthquakes from gliscor.
A breloom counter i have tried out is Celebi:
Celebi @ leftovers
148 HP, 252 SpD, 108 Spe
-giga drain/grass knot
This worked really good in DPPT as a breloom counter.
Psychic is to hit breloom hard.
giga drain is for a reliable move that hits hard and receives STAB.
Grass knot was the move i used, but considering giga drains power boost, i suppose it will be a better move in this generation.
recover is to recover the damage you take from breloom while you are asleep, as focus punch only 3-4HKOs celebi.
Thunder wave hits switch ins and is a great move in general.
I don't think these suggestions will matter, since if you peaked #27 in the ladder, then that means this team can easily work around threats in the metagame.