Quote Originally Posted by talisman View Post
All of them, for varying reasons.

Medical gives you Red packs and reduces the time for recovery from injury - you will get an extra Red pack if you don't get any bookings in a match you attend.
You get the packs, the rest is just hooey...

Quote Originally Posted by talisman View Post
Improve your pitch to reduce the chances of injuries happening.
You'll have to upgrade at some point, but it doesn't do anything at all; same as above - just cosmetic...

Quote Originally Posted by talisman View Post
Maximise the revenue from your matchday attendance by increasing your ticket price by one each match until attendance starts to drop off then go back one.
Very important, this one. Since you're dealing with little margins all over the place, you won't want to miss this: Always go for a sell-out rather than the maximum possible income here since it'll give you the few extra % in possession which in turn increases your chance of winning.

Quote Originally Posted by talisman View Post
The Youth setup gives you young players occasionally, useful in the early seasons when they will be of a quality similar to the main squad, but once you have mostly 5*/6*, the 'free' one will be useful for signing and selling to raise funds.
Ought to be one of your first builds/upgrades.

When planning the upgrades, try to make sure not to waste any days without building anything. Also try to schedule the upgrades so that you won't interrupt 'pay-out' cycles, i.e. start the upgrade of the medical facilities on the day you receive red packs, training facilities on the day you receive green packs, youth on the day you receive youth players, and you're good to go