I think you are projecting your optimism, but not the attributes Martial has. Martial is very different from any of Tevez, Rooney, Ronaldo. Just because Alexis dropped deep doesn't make Martial automatically runs in behind, occupies defenders... It's clear even when Martial plays as no 9. He tries to ghost into the space in front of the defender to finish. Martial ain't cutting in front of defenders enough even when there is plenty space. This is not just this season, under Mourinho nor LVG.
Alexis to drop deep with Martial not running behind the defense, or channel enough is actually backfiring with our players stepping on each other toes on paper. If anything, Lukaku style is the best to complement Martial. Both of them need to improve to get it better. Martial is better than Lukaku in protecting the ball and since his dribbling is superior he can at time carry the ball better. However, mobility is not what can be used to describe Martial as better to compare to Lukaku as both pretty much only come to life in final third while in the build up they are not all that now you can see how a player like Alexis does.
That's non sense though, we played the best football against Everton this season without Lukaku and played more on the feet with more quick passing (no more hoof ball & crossing). Our front three Mata, Martial, Lingard were very fluid, imagine if we have Sanchez instead of Mata, it'll be so much better. Martial might not be the best runner who find space like Chicharito or Cole, but he's better than Lukaku in this aspect. If anyone needs significant improvement that will be Lukaku's movement so he can play with the likes of Valencia, Shaw, Martial, Pogba Alexsis & Lingard. We don't have players who can give him 9/10 crossings & hoof ball.
Sorry but if 75m-90m striker is complaining from Martial's service, have a look at RVP who played with Cleverley, Young, Valencia & Welbeck.
You need to watch more football. Lukaku scored those kind of goal every here and there. Problem is that we don't give him the suffcient service and Martial is also part of the problem.
Just example:
Wow really? Me need to watch more football? Did you even watch the video before you posted it?
Watch the video, all the goals were pure crossing & hoof ball service (which the style that we have been playing this season). Only 3 goals came from through ball with Lukaku made the good run vs Croatia, USA, Estonia (Just not enough!).
1st goal vs Russia (From crossing or tap in), 2nd goal vs Russia (hoof ball + strength), 3rd goal vs Netherland (hoof ball + strength), 4th goal vs Croatia (through ball), 5th goal vs Croatia (pure power & strength),
6th, 7th & 8th goal vs Luxembourgh (Nothing indicate of good movement just standard Lukaku vs lesser team), 9th goal vs Sweden (long shot), 10th goal vs USA (through ball),
11th goal vs Iceland (crossing or tap in), 12th goal vs Portugal (crossing), 13th goal vs Switzerland (crossing), 14th goal vs Finland (crossing), 15th goal vs Norway (long shot),
16th goal vs Ireland (long shot) & 17th goal vs Ireland (crossing or tap in), 18th vs Bosnia (long shot), 19th vs Estonia (crossing) 20th vs Estonia (through ball),
21st vs Greece (crossing), 22nd & 23rd vs Gibraltar (crossing) & (PK), 24th vs Greece (crossing), 25th vs Cyprus (pure strength), 26th vs Mexico (crossing), 27th vs Mexico (crossing), 28th vs Japan (crossing).
How do you expect Martial to play crossing & hoof ball service? We need Baines, Giggs & Beckham service to get the best out of Lukaku. There is a reason why he only scored 2 goals against top 10 sides this season.