Since Tie's don't have hyperspace capability are there perhaps hyperspace rings for them?, or would they be hyperspace squares
Just thinking that maybe in a circumstance instead of some sort of capital ship carrying a load of TIE's would it be possible for maybe a 1/2 sqaud to fly in some how for whatever reason, maybe just to relieve another group of TIE's/ replacements.
I think that by the OT and beyond, there were enough carrier ships to carry squadrons of TIEs wherever they needed to go. With no sheilds as well, it makes more sense to send a larger vessel on a mission carrying several ties than sending multiple ties via external hyperdrive fittings. Plus you have the added fire support of a larger ship, it can refuel the TIEs, etc. The Empire is also largely based on intimidation, so their strategy was likely to send an enormous force somewhere to overwhelm the enemy and get them to surrender, rather than sending out one or two fighters on various missions.
I guess they must have gotten better at fitting smaller ships with hyper-drives as well, so for missions involving individual fighters, you'd probably use something slightly larger and far more durable Post ROTS. The Xwings and Ywings have them and they're not that much bigger than Xwings. Plus the Empire has added resources, so you'd think they could develop new tech at least as fast as the rebels.