I am finding missions and followers a fun aspect of garrisons, but am curious about whether and which missions to run. I at a stage now where quite a few available missions offer only a modest chance of success - 51%, 65% etc - even with my best followers. (They are L95 missions and my followers are usually L90 or 91). I am reluctant to run such missions - I've done several with 88% chances and failed (yes, RNG is RNG, I know).
On the one hand running missions is good because even if they fail, followers get XP.
On the other hand, the missions seem to remain (for a while at least) if you don't run them. So you could wait a while, to give your followers a chance to level or to find recruits with good counters to the mission danger.
This raises two questions:
(1) If you run a mission, does that increase the odds of getting another mission? Does the number of available missions in your garrison have any effect on the chance of getting a new mission available? Is it like a pump, refilling as you start to get empty? Or is it blind, like loot, where holding an item has no effect on whether the same item drops again?
(2) If you don't run a mission, how long does it remain available? Are they effectively weeklies? I can't imagine they stay available forever.
Here are a few tips I am gravitating towards:
(1) Follower level is key: keep your best followers active, to level them up fast rather than share out XP among all your crew. Best being highest level, but also the epics (e.g. Fiona), rares (e.g. Ashran starter one) and especially any with a profession trait you will have a building for.
(2) Use short CDs before long CDs: go for the short missions first, so you have more XP by the time you run the more lucrative long missions. Run short missions during your play sessions; run the 8-10 hour ones over night (d'oh!).
(3) Mission level is key to difficulty: run the lower level missions first, to try to level up your followers so they have more of a shot at the higher level ones.
(4) Variety is good: having the right counter to a mission difficulty has a big effect on success, so keep a mix of abilities on your followers. If you have 2 good followers with a common counter-ability, they would be good candidates to use that item that re-rolls follower abilities.
Anyone got answers to my 2 questions? Or other tips to share?