I guess the most obvious answer would be to not skip t1
A lot of people seem to favor going t2 rather than one for the luchs and while it can also be a very good option, bear in mind that this will severely delay your medium tanks which already come out much later than other factions. Furthermore it will make you quite reliant on medkits which will cost a lot of munitions in the long run.
My advice would be that you should not necessarily go t2 by default, but consider your options as you see your opponents opening. Also there is no shame in backteching to t1 later in the game if you become in need of indirect fire.
Unless you can catch an enemy mortar, the lieg is basically your only option for real indirect fire as OKW.
Ostheer Strategies
^^ First read pls^^
Because I skip t1, lacking indirect fire hurts a bit in late game. Any suggestions?
Depends on which map and vs who.
Like vs Soviet if he goes soviet t1 and m3 you can get in trouble without grens with faust.
This doc got picked often in the past, because of the stug and the Tiger.