My opinion: I find it a very strong lane. It in no way truly cripples you lategame (Like how Jarvan/Leona is very strong, but cripples you lategame because you lack a true ranged ad carry) because Jayce can play as a ranged ad.

Combo: (In ranged) Jayce puts down E, shoots empowered Q, press' W, R, Q onto then and E them towards your turret/your side of the map.

Alistar: When Jayce puts down his ranged E, you use it as the speed boost, run up and do the combo.

With Jayce having such a strong level 2-5, I find at level 2 you can easily burn a flash, and level 3-5 you can just kill them when they don't have flash.

Thats just my opinion, your thoughts?